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TORREMOLINOS INTERNATIONAL CONVENTION FOR THE SAFETY OF FISHINGVESSELS, 1977

TORREMOLINOS INTERNATIONAL CONVENTION FOR THE SAFETY OF FISHINGVESSELS, 1977 Regulation 97 Fire Mains (1) Where more than one hydrant is required to provide the number of jets required by Regulation 98 (1), a fire main shall be provided.

(2) Materials readily rendered ineffective by heat shall not be used for fire mains, unless adequately protected.

(3) Where fire pump delivery pressure can exceed the designed working pressure of fire mains, relief valves shall be fitted.

(4) Fire mains shall have no connexions other than those required for fire fighting, except for the purposes of washing the deck and anchor chains or operating the chain locker bilge ejector.

(5) Where fire mains are not self-draining, suitable drain cocks shall be fitted where frost damage may be expected.* [* See Guidance for Precautions Against Freezing of Fire Mains contained in Recommendation 7 to the Final Act of the Conference.] Regulation 98 Fire Hydrants, Fire Hoses and Nozzles (1) Fire hydrants shall be positioned so as to allow easy and quick connexion of fire hoses and so that at least one jet can be directed into any part of the vessel which is normally accessible during navigation.

(2) The jet required in paragraph (1) shall be from a single length of fire hose.

(3) In addition to the requirements of paragraph (1), machinery spaces of Category A shall be provided with at least one fire hydrant complete with fire hose and dual purpose nozzle. This fire hydrant shall be located outside the space and near the entrance.

(4) For every required fire hydrant there shall be one fire hose. At least one spare fire hose shall be provided in addition to this requirement.

(5) Single lengths of fire hose shall not exceed 20 metres.

(6) Fire hoses shall be of an approved material. Each fire hose shall be provided with couplings and a dual purpose nozzle.

(7) Except where fire hoses are permanently attached to the fire main, the couplings of fire hoses and nozzles shall be completely interchangeable.

(8) The nozzles as required by paragraph (6) shall be appropriate to the delivery capacity of the fire pumps fitted, but in any case shall have a diameter of not less than 12 millimetres.

Regulation 99 Fire Extinguishers (1) Fire extinguishers shall be of approved types. The capacity of required portable fluid extinguishers shall be not more than 14 litres and not less than 9 litres. Other extinguishers shall not be in excess of the equivalent portability of the 14 litre fluid extinguisher and shall not be less than the fire-extinguishing equivalent of a 9 litre fluid extinguisher. The Administration shall determine the equivalents of fire extinguishers.

(2) Spare charges shall be provided to the satisfaction of the Administration.

(3) Fire extinguishers containing an extinguishing medium which, in the opinion of the Administration, either by itself or under expected conditions of use, gives off toxic gases in such quantities as to endanger persons shall not be permitted.

(4) Fire extinguishers shall be periodically examined and subjected to such tests as the Administration may require.

(5) Normally, one of the portable fire extinguishers intended for use in any space shall be stowed near an entrance to that space.

Regulation 100 Portable Fire Extinguishers in Control Stations andAccommodation and Service Spaces (1) A sufficient number of approved portable fire extinguishers shall be provided in control stations and accommodation and service spaces to ensure that at least one extinguisher of a suitable type is readily available for use in any part of such spaces. The total number of extinguishers in these spaces, however, shall not be less than three.

(2) Spare charges shall be provided to the satisfaction of the Administration.

Regulation 101 Fire-Extinguishing Appliances in Machinery Spaces (1) (a) Spaces containing oil-fired boilers, fuel oil units or internal combustion machinery having a total power output of not less than 375 kilowatts shall be provided with one of the following fixed fire-extinguishing systems, to the satisfaction of the Administration: (i) a pressure water-spraying installation; (ii) a fire-smothering gas installation; (iii) a fire-extinguishing installation using vapours from low toxicity vapourizing liquids, e.g. bromochlorodifluoromethane (BCF) or bromotrifluoromethane (BTM); or (iv) a fire-extinguishing installation using high expansion foam.

(b) Where the engine and boiler rooms are not entirely separated from each other or if fuel oil can drain from the boiler room into the engine room, the combined engine and boiler rooms shall be considered as one compartment.

(2) Installations listed in paragraph (1)(a) shall be controlled from readily accessible positions outside such spaces not likely to be cut off by a fire in the protected space. Arrangements shall be made to ensure the supply of power and water necessary for the operation of the system in the event of fire in the protected space.

(3) Vessels which are constructed mainly or wholly of wood or fibre reinforced plastic and fitted with oil-fired boilers or internal combustion machinery which are decked in way of the machinery space with such material, shall be provided with one of the extinguishing systems referred to in paragraph (1).

(4) In all machinery spaces of Category A at least two portable extinguishers shall be provided, of a type suitable for extinguishing fires involving fuel oil. Where such spaces contain machinery which has a total power output of not less than 250 kilowatts, at least three such extinguishers shall be provided. One of the extinguishers shall be stowed near the entrance to the space.

(5) Vessels having machinery spaces not protected by a fixed fire-extinguishing system shall be provided with at least a 45 litre foam extinguisher or its equivalent, suitable for fighting oil fires. Where the size of the machinery spaces makes this provision impracticable, the Administration may accept an additional number of portable fire extinguishers.

Regulation 102 Fireman's Outfits The number of fireman's outfits and their location shall be to the satisfaction of the Administration.

Regulation 103 Fire Control Plan There shall be a permanently exhibited fire control plan to the satisfaction of the Administration. In small vessels the Administration may dispense with this requirement.

Regulation 104 Ready Availability of Fire-Extinguishing Appliances Fire-extinguishing appliances shall be kept in good order and available for immediate use at all times.

Regulation 105 Acceptance of Substitutes Where in this Part any special type of appliance, apparatus, extinguishing medium or arrangement is specified, any other type of appliance, etc., may be allowed provided the Administration is satisfied that it is not less effective.

CHAPTER VI PROTECTION OF THE CREW Regulation 106 General Protection Measures (1) A lifeline system shall be designed to be effective for all needs and the necessary wires, ropes, shackles, eye bolts and cleats shall be provided.

(2) Deck openings provided with coamings or sills of less than 600 millimetres in height shall be provided with guards, such as hinged or portable railings or nettings. The Administration may exempt small openings such as fish scuttles from compliance with these requirements.

(3) Skylights, or other similar openings shall be fitted with protective bars not more than 350 millimetres apart. The Administration may exempt small openings from compliance with this requirement.

(4) The surface of all decks shall be so designed or treated as to minimize the possibility of personnel slipping. In particular, decks of working areas, such as in machinery spaces, in galleys, at winches and where fish is handled as well as at the foot and head of ladders and in front of doors, shall be provided with anti-skid surfaces.

Regulation 107 Deck Openings (1) Hinged covers of hatchways, manholes and other openings shall be protected against accidental closing. In particular, heavy covers on escape hatches shall be equipped with counterweights, and so constructed as to be capable of being opened from each side of the cover.

(2) Dimensions of access hatches shall not be less than 600 millimetres by 600 millimetres or 600 millimetres diameter.

(3) Where practicable, hand-holds shall be provided above the level of the deck over escape openings.

Regulation 108 Bulwarks, Rails and Guards (1) Efficient bulwarks or guard rails shall be fitted on all exposed parts of the working deck and on superstructure decks if they are working platforms. The height of bulwarks or guard rails above deck shall be at least 1 metre. Where this height would interfere with the normal operation of the vessel, a lesser height may be approved by the Administration.

(2) The minimum vertical distance from the deepest operating waterline to the lowest point of the top of the bulwark, or to the edge of the working deck if guard rails are fitted shall ensure adequate protection of the crew from water shipped on deck, taking into account the sea states and the weather conditions in which the vessel may operate, the areas of operation, type of vessel and its method of fishing and shall be to the satisfaction of the Administration.* [* See Guidance on a Method of Calculation of the Minimum Distance from the Deepest Operating Waterline to the Lowest Point of the Top of the Bulwark or to the Edge of the Working Deck contained in Recommendation 9 of Attachment 3 to the Final Act of the Conference.] (3) Clearance below the lowest course of guard rails shall not exceed 230 millimetres. Other courses shall not be more than 380 millimetres apart, and the distance between stanchions shall not be more than 1.5 metres. In a vessel with rounded gunwales, guard rail supports shall be placed on the flat of the deck. Rails shall be free from sharp points, edges and corners and shall be of adequate strength.

(4) Means to the satisfaction of the Administration, such as guard rails, lifelines, gangways or underdeck passages, shall be provided to protect the crew in moving between accommodation, machinery and other working spaces. Storm rails shall be fitted as necessary to the outside of all deckhouses and casings to secure safety of passage or work for the crew.

(5) Stern trawlers shall be provided with suitable protection such as doors, gates or nets at the top of the stern ramp at the same height as the adjacent bulwark or guard rails. When such protection is not in position a chain or other means of protection shall be provided across the ramp.

Regulation 109 Stairways and Ladders For the safety of the crew, stairways and ladders of adequate size and strength with handrails and non-slip treads shall be provided to the satisfaction of the Administration.

CHAPTER VII LIFE-SAVING APPLIANCES Regulation 110 Numbers and Type of Survival Craft and Rescue Boats (1) Every vessel shall be provided with at least two survival craft.

(2) The number, capacity and type of survival craft and rescue boats of vessels of 75 metres in length and over shall comply with the following: (a) survival craft of sufficient aggregate capacity as will accommodate on each side of the vessel at least the total number of persons on board shall be provided. The Administration shall determine the number of float-free liferafts to be carried. However, there shall be at least sufficient float-free liferafts to accommodate at least 50 per cent of the persons on board. Provided, however, that if the vessel complies with subdivision requirements, damage stability criteria and criteria of increased structural fire protection, additional to those stipulated by Regulation 40 and by Chapter V, and the Administration considers that a decrease of the number of survival craft and their capacity will not affect safety, the Administration may allow this decrease provided the aggregate capacity of survival craft situated on each side of the vessel is sufficient to accommodate at least 50 per cent of the persons on board.

In addition, float-free liferafts for at least 50 per cent of the total number of persons on board shall be provided; (b) at least one of the survival craft referred to in sub-paragraph (a) shall be motor-propelled; (c) a motor rescue boat shall be provided unless the vessel is provided with a suitable survival craft which fulfils the requirements for a motor rescue boat; (d) where the total number of persons on board is 100 or more, at least two of the survival craft referred to in sub-paragraph (a) shall be motor-propelled, one on each side of the vessel; and (e) where the total number of persons on board is 200 or more, at least two of the survival craft referred to in sub-paragraph (a), shall be rigid motor-propelled lifeboats, one on each side of the vessel.

(3) Vessels of less than 75 metres in length but of 45 metres in length and over shall be provided with: (a) survival craft of sufficient aggregate capacity to accommodate on each side of the vessel at least the total number of persons on board, which shall include float-free liferafts of sufficient aggregate capacity to accommodate at least 50 per cent of the total number of persons on board; (b) a rescue boat, unless the vessel is provided with a suitable survival craft which fulfils the requirement for a rescue boat; and (c) one motor-propelled survival craft on each side of the vessel where the total number of persons on board is 100 or more.

(4) Vessels of less than 45 metres in length shall be provided with: (a) survival craft of sufficient aggregate capacity to accommodate at least 200 per cent of the total number of persons on board. Sufficient of these survival craft to accommodate at least the total number of persons on board shall be capable of being launched from either side of the vessel. However, the Administration may permit a reduction in the capacity or number of survival craft required if satisfied that the nature and conditions of voyage and the conditions of the weather would not adversely affect the safety of the vessel and its crew. However, survival craft to accommodate at least 100 per cent of the persons on board shall be provided; and (b) a rescue boat, except where the Administration is satisfied that because of the size and manoeuvrability of the vessel, the near availability of search and rescue facilities and meteorological warning systems, the operation of the vessel in areas not susceptible to heavy weather or the seasonal characteristics of the operation, such provision is unnecessary.

(5) Where the distance from the embarkation deck to the waterline of the vessel in the lightest operating condition exceeds 4.5 metres, survival craft, except float-free liferafts, shall be capable of being davit launched with a full complement of persons or be provided with equivalent approved means of embarkation.

Regulation 111 Marking of Survival Craft (1) The dimensions of a lifeboat and the number of persons which it is permitted to carry shall be marked on it in clear permanent characters.

The name and port of registry of the vessel to which the lifeboat belongs shall be painted on each side of the bow.

(2) An inflatable liferaft and its valise or container shall be marked with the number of persons, the serial number and the manufacturer's name.

(3) Every rigid liferaft shall be marked with the name and port of registry of the vessel in which it is carried and with the number of persons it is permitted to carry.

(4) No survival craft shall be marked for a greater number of persons than that obtained in the manner specified in Regulations 112 and 113.

Regulation 112 Construction and Capacity of Lifeboats (1) Lifeboats shall be constructed to the satisfaction of the Administration and be of such form and proportions that they shall have adequate freeboard and stability in a seaway when loaded with their full complement of persons and equipment and comply with the provisions of Sections 1 and 2 of Appendix 2, as applicable. Lifeboats loaded with their full complement of persons and equipment shall, when flooded and open to the sea, be capable of keeping afloat with positive stability.

(2) The cubic capacity of a rigid lifeboat shall be determined by the rule given in Section 3 of Appendix 2 or by any other method giving at least the same degree of accuracy. The capacity of a square-sterned lifeboat shall be calculated as if the lifeboat had a pointed stern.

(3) The number of persons which a rigid lifeboat shall be permitted to accommodate shall: (a) be equal to the greatest whole number obtained by dividing the capacity in cubic metres by a factor: (i) of 0.283 for a boat of 7.3 metres in length or over; (ii) of 0.396 for a boat of 4.9 metres in length; and (iii) obtained by linear interpolation between 0.396 and 0.283 for boats over 4.9 metres but less than 7.3 metres; and (b) in no case exceed the number of adult persons wearing life-jackets who can be properly seated without in any way interfering with the use of oars or the operation of other propulsion equipment.

(4) The number of persons which an inflated lifeboat shall be permitted to accommodate shall be the lesser of the following numbers: (a) the greatest whole number obtained by dividing by 0.12 the volume of the main buoyancy tubes measured in cubic metres reduced by 0.40 cubic metres which for this purpose shall include neither the thwarts nor the centreline tube if fitted; or (b) the greatest whole number obtained by dividing by 0.32 the area of the floor measured in square metres which for this purpose may include the thwarts and centreline tube if fitted.

In no case shall it exceed the number of adult persons wearing life-jackets who can be properly seated without in any way interfering with the use of oars or the operation of other propulsion equipment. No inflated lifeboat shall be approved which has a carrying capacity of less than 10 persons.

Regulation 113 Construction and Capacity of Liferafts (1) The construction of inflatable liferafts shall comply with the provisions of Section 4.2 of Appendix 2.

(2) The number of persons which an inflatable liferaft shall be permitted to accommodate shall be the lesser of the following numbers: (a) the greatest whole number obtained by dividing by 0.096 the volume measured in cubic metres of the main buoyancy tubes (which for this purpose shall include neither the arches nor the thwart or thwarts if fitted) when inflated; or (b) the greatest whole number obtained by dividing by 0.372 the area measured in square metres of the floor (which for this purpose may include the thwart or thwarts if fitted) of the liferaft when inflated.

However, no inflatable liferaft shall be approved which has a carrying capacity of less than six persons or more than 25 persons.

(3) Rigid liferafts shall comply with the provisions of Section 4.1 of Appendix 2 and (a) be so constructed that if they are dropped into the water from their stowed position neither the liferaft nor its equipment will be damaged; and (b) at all times be effective and stable when floating either way up.

(4) The number of persons which a rigid liferaft shall be deemed fit to accommodate shall be the lesser of the following numbers: (a) the greatest whole number obtained by dividing by 0.096 the volume measured in cubic metres of the air cases or buoyant material; or (b) the greatest whole number obtained by dividing by 0.372 the deck area of the liferaft measured in square metres.

Regulation 114 Construction and Marking of Rescue Boats (1) Rescue boats, if not constructed as lifeboats in accordance with the provisions of Sections 1 and 2 of Appendix 2 as appropriate, shall be constructed in accordance with the provisions of Section 5 of that Appendix.

(2) Rescue boats shall be of such form and proportions that they shall have adequate freeboard and stability in a seaway when loaded with the full complement of persons and equipment and shall be capable of keeping afloat with positive stability when flooded and open to the sea.

(3) The length of rescue boats and the number of persons which a boat shall be permitted to accommodate shall be determined by the Administration. However, rescue boats shall not be less than 3.8 metres in length except where, owing to the size of the vessel, or for other reasons where the carriage of such boats is considered unreasonable or impracticable, the Administration may accept a rescue boat of a lesser length but not less than 3.3 metres.

(4) Rigid rescue boats shall be clearly marked in permanent characters with the dimensions of the boat and the number of persons for which the boat is certified. The name and port of registry of the vessel to which the boat belongs shall be painted on each side of the bow.

(5) Inflatable rescue boats shall be marked with the number of persons for which the boat is certified, date of manufacture, maker's name or mark, serial number of the boat and name and port of registry of the vessel to which the boat belongs.

Regulation 115 Equipment for Survival Craft and Rescue Boats (1) Lifeboats shall be provided with the equipment specified in Sections 6.1 to 6.4 inclusive of Appendix 2, as appropriate.

(2) Liferafts shall be provided with the equipment specified in Section 6.5 of Appendix 2, as appropriate.

(3) Rescue boats shall be provided with the equipment specified in Sections 6.6 and 6.7 of Appendix 2 unless included in the number of survival craft in accordance with Regulation 110, in which case they shall be provided with the equipment specified in Sections 6.1 to 6.4 inclusive of Appendix 2, as appropriate.

Regulation 116 Availability and Stowage of Survival Craft and Res-cue Boats (1) Survival craft shall: (a) (i) be readily available in case of emergency; (ii) be capable of being launched safely and rapidly even under unfavourable conditions of trim and against 15 degrees of list; and (iii) be capable of rapid recovery if fulfilling also the requirements for a rescue boat; and (b) be so stowed that: (i) the marshalling of persons at the embarkation deck is not impeded; (ii) their prompt handling is not impeded; (iii) embarkation can be effected rapidly and in good order; and (iv) the operation of any other survival craft is not interfered with.

(2) Survival craft and launching appliances shall be in working order and available for immediate use before the vessel leaves port and kept so at all times when at sea.

(3) (a) Survival craft shall be stowed in accordance with Section 7 of Appendix 2 to the satisfaction of the Administration.

(b) Every lifeboat shall be attached to a separate set of davits or approved launching appliance.

(c) Survival craft shall be positioned as close to accommodation and service spaces as possible, stowed in suitable positions to ensure safe launching, with particular regard to clearance from the propeller and steeply overhanging portions of the hull, so ensuring as far as practicable that they can be launched down the straight side of the vessel. If positioned forward they shall be stowed abaft the collision bulkhead in a sheltered position and in this respect the Administration shall give special consideration to the strength of the davits.

(d) The method of launching and recovering of rescue boats shall be approved taking into account the weight of the rescue boat including its equipment and 50 per cent of the number of persons it is certificated to carry, the construction and size of the rescue boat and its position of stowage above the waterline in the vessel's lightest operating condition.

However, every rescue boat stowed at a height of more than 4.5 metres above the waterline in the vessel's lightest operating condition shall be provided with approved arrangements for launching and recovery.

(e) Davits shall be of an approved design complying with the requirements of Section 7 of Appendix 2.

(f) (i) The liferafts shall be so stowed as to be readily available in case of emergency in such a manner as to permit them to float free from their stowage, inflate and break free from the vessel in the event of its sinking. However, davit launched liferafts need not float free.

(ii) Lashings, if used, shall be fitted with an automatic (hydrostatic) release system of an approved type.

Regulation 117 Embarkation into Survival Craft Suitable arrangements shall be made for embarkation into the survival craft which shall include: (a) at least one ladder, or other approved means, on each side of the vessel to afford access to the survival craft when waterborne except where the Administration is satisfied that the distance from the point of embarkation to the waterborne survival craft is such that a ladder is unnecessary; (b) means for illuminating the stowage position of survival craft and their launching appliances during preparation for and the process of launching, and also for illuminating the water into which the survival craft are launched until the process of launching is completed, the power for which to be supplied from the emergency source required by Regulation 55; (c) arrangements for warning all persons on board that the vessel is about to be abandoned; and (d) means for preventing any discharge of water into the survival craft.

Regulation 118 Life-jackets (1) For every person on board, a life-jacket of an approved type shall be carried complying with the requirements of Section 8.1 of Appendix 2.

Each life-jacket shall be suitably marked showing that it has been approved.

(2) Life-jackets shall be so placed as to be readily accessible and their position shall be plainly indicated.

Regulation 119 Lifebuoys (1) At least the following number of lifebuoys shall be provided: (a) 8 lifebuoys in vessels of 75 metres in length and over; (b) 6 lifebuoys in vessels of less than 75 metres in length but 45 metres in length and over; (c) 4 lifebuoys in vessels of less than 45 metres in length.

Such lifebuoys shall comply with the requirements of Section 8.2 of Appendix 2.

(2) At least half of the number of lifebuoys referred to in paragraph (1) shall be provided with self-igniting lights, which shall be near the lifebuoys to which they belong, with the necessary means of attachment.

(3) The self-igniting lights required by paragraph (2) shall be such that they cannot be extinguished by water. They shall be capable of burning for not less than 45 minutes and shall have a luminous intensity of not less than 2 candelas in all directions of the upper hemisphere.

(4) In vessels of 45 metres in length and over at least two of the lifebuoys provided with self-igniting lights in accordance with paragraph (2) shall also be provided with an efficient self-activating smoke signal capable of producing smoke of a highly visible colour for at least 15 minutes, and shall where practicable be capable of quick release from the wheelhouse.

(5) At least one lifebuoy on each side of the vessel shall be fitted with a buoyant lifeline of at least 27.5 metres in length. Such lifebuoys shall not have self-igniting lights.

(6) All lifebuoys shall be so placed as to be readily accessible to the persons on board and shall always be capable of being rapidly case loose and shall not be permanently secured in any way.

Regulation 120 Line-Throwing Appliances (1) Every vessel shall carry a line-throwing appliance of an approved type.

(2) A line-throwing appliance shall be capable of carrying a line not less than 230 metres with reasonable accuracy and shall include not less than four projectiles and four lines.

(3) The rockets, with the means of igniting them and the lines shall be kept in a watertight case.

Regulation 121 Distress Signals (1) Every vessel shall be provided, to the satisfaction of the Administration, with means of making effective distress signals by day and by night, including at least 12 parachute signals capable of giving a bright red light at a high altitude.

(2) Distress signals shall be of an approved type. They shall be so placed as to be readily accessible and their position shall be plainly indicated.

Regulation 122 Portable Radio Equipment A portable radio transmitter/receiver or an emergency position-indicating radio beacon (EPIRB), each of an approved type, shall be carried and located to the satisfaction of the Administration so as to be readily accessible and its position shall be plainly indicated.

Regulation 123 Radiotelegraph Installations and Searchlights inMotor Lifeboats (1) Where the total number of persons on board a vessel is 200 or more a radiotelegraph installation complying with the provisions of Regulation 137 and with the relevant provisions of Appendix 2 shall be fitted in at least one of the motor lifeboats.

(2) A searchlight complying with the relevant provisions of Appendix 2 shall be fitted in each motor lifeboat, if provided.

Regulation 124 Retro-Reflective Tapes on Life-Saving Appliances All survival craft, rescue boats, life-jackets and lifebuoys shall be fitted with retro-reflective tapes to the satisfaction of the Administration. * [* See Recommendation on Retro-Reflective Tapes on Life-Saving Appliances adopted by the Organization by Regulation A.274 (VIII).] CHAPTER VIII EMERGENCY PROCEDURES, MUSTERS AND DRILLS Regulation 125 Muster List and Abandon Ship Procedure (1) Subject to paragraph (2) a muster list shall be drawn up when the vessel leaves port and shall include the following information: (a) duties assigned to different members of the crew in the event of an emergency in connexion with: (i) the closing of any watertight doors, valves and closing mechanisms of scuppers, overboard shoots, sidescuttles and fire doors; (ii) the equipping of survival craft (including portable radio apparatus for survival craft); (iii) the launching of the survival craft; (iv) the general preparation of other life-saving appliances; (v) the manning of fire parties assigned to deal with fires; and (vi) the special duties assigned in respect of the operation of fire-fighting equipment and installations; and (b) the signals for summoning the crew to their survival craft and fire stations and particulars of these signals including the emergency signal for summoning the crew to muster stations which shall be a succession of seven or more short blasts followed by one long blast on the whistle or siren.

(2) In vessels of less than 45 metres in length the Administration may permit relaxation of the requirements of paragraph (1) if satisfied that, due to the small number of crew members, no muster list is necessary.

(3) The list of emergency signals shall be posted up in the wheelhouse and in the crew accommodation. Copies of the muster list shall be posted up in several parts of the vessel and, in particular, in the crew accommodation.

(4) Emergency signals specified in the muster list shall be made with the whistle or siren. Vessels of 45 metres in length and over shall be fitted with an electrical system of alarm bells capable of being operated from the wheelhouse.

Regulation 126 Practice Musters and Drills (1) A muster of the crew for abandon ship drill and fire drill shall take place at intervals of not more than one month, provided that these musters shall take place within 24 hours of leaving port whenever 25 per cent of the crew has been replaced since the last muster.

(2) When holding musters, the life-saving, fire-fighting and other safety equipment shall be examined to ensure that they are complete and in satisfactory working order.

(3) The dates on which musters are held shall be recorded in such log book as may be prescribed by the Administration, and if no muster is held within the prescribed interval or a part muster only is held, an entry shall be made stating the circumstances and extent of the muster held. A report of the examination of the life-saving equipment shall be entered in the log book, together with a record of boats used.

(4) In vessels fitted with lifeboats, different boats shall be swung out at successive drills. The lifeboats shall, where practicable, be lowered into the water at least every four months at which time checks shall be carried out for the reliability of all apparatus and systems and the watertight integrity of the boats as well as operation of the releasing devices.

(5) The musters shall be so arranged as to ensure that the crew thoroughly understand and are practised in the duties they have to perform including instructions in the handling and operation of liferafts where these are carried.

Regulation 127 Training in Emergency Procedures (1) The Administration shall take such measures as it may deem necessary to ensure that crews are adequately trained in their duties in the event of emergencies. Such training shall include, as appropriate: (a) in respect of signals: (i) understanding the definite signals required in the muster list; and (ii) the meaning of and action to be taken on hearing the emergency signal; (b) in respect of lifeboats and rescue boats: (i) the preparation, swinging out (including the means for holding the boat alongside the vessel whilst embarking the crew), lowering the boat into the water and getting the boat away from the vessel; (ii) rowing and steering when the boat is afloat; (iii) understanding the orders commonly used during the operation of boat handling; (iv) knowledge of the equipment carried and how to use such equipment; and (v) understanding the operation of the engine, if fitted; (c) in respect of liferafts: (i) methods of launching and inflating liferafts and precautions to be taken before, during and after launching; (ii) boarding liferafts, both davit launched and inflated afloat, and boarding rigid liferafts; (iii) righting an inverted raft; (iv) knowledge of how to use the sea anchor; (v) knowledge of the equipment carried and how to use such equipment; (vi) understanding the reason for "topping up" buoyancy tubes and for inflating the floor; and (vii) understanding the instructions on how to survive in a liferafts; (d) in respect of survival in the water: (i) the dangers of hypothermia and how to minimize its effects; and (ii) the use of life-jackets, other personal buoyancy garments and buoyant clothing; and (e) in respect of fire fighting: (i) the use of fire hoses with different nozzles; (ii) the use of fire extinguishers; (iii) knowledge of the location of fire doors; and (iv) the use of breathing apparatus.

(2) The Administration shall give consideration to the need for providing information or training, or both, in respect of lifting persons from vessels and survival craft by helicopter.

CHAPTER IX RADIOTELEGRAPHY AND RADIOTELEPHONY PART A APPLICATION AND DEFINITIONS Regulation 128 Application (1) Unless expressly provided otherwise, this Chapter shall apply to both new and existing vessels. However, for existing vessels, the Administration may defer implementation of the requirements for a period not exceeding 6 years from the date of entry into force of the Convention.

(2) No provision in this Chapter shall prevent the use by a vessel or survival craft in distress of any means at its disposal to attract attention, make known its position and obtain help.

Regulation 129 Terms and Definitions (1) For the purpose of this Chapter the following terms shall have the meanings defined below: (a) "Radio Regulations" means the Radio Regulations annexed to, or regarded as being annexed to, the International Telecommunication Convention in force.

(b) "Radiotelegraph auto alarm" means an approved automatic alarm receiving apparatus which responds to the radiotelegraph alarm signal.

(c) "Radiotelephone auto alarm" means an approved automatic alarm receiving apparatus which responds to the radiotelephone alarm signal.

(d) "Radio Officer" means a person holding at least a radio-communication operator's general certificate for the maritime mobile service or a first or second class radiotelegraph operator's certificate complying with the Radio Regulations, who is employed in the radiotelegraph station of a vessel which is provided with such a station in compliance with Regulation 130 or Regulation 131.

(e) "Radio Operator" means a person holding a radiotelegraph operator's special certificate complying with the Radio Regulations.

(f) "Radiotelephone operator" means a person holding an appropriate certificate complying with the Radio Regulations.

(g) "New installation" means an installation wholly installed on board a vessel on or after the date of entry into force of the Convention.

(h) "Existing installation" means any installation which is not a new installation.

(i) "Mile" means 1852 metres.

(2) "Radiotelephone station", "Radiotelephone installation" and "Watches-radiotelephone" relate to the Medium Frequency Band, unless expressly provided otherwise.

(3) All other terms which are used in this Chapter and which are also defined in the Radio Regulations shall have the same meanings as defined in those Regulations.

Regulation 130 Radiotelegraph Station Vessels of 75 metres in length and over, unless exempted under Regulation 132, shall be fitted with a radiotelegraph station complying with the provisions of Regulations 136 and 137.

Regulation 131 Radiotelephone Station (1) Subject to paragraph (2), every vessel unless exempted under Regulation 132 shall be fitted with a radiotelephone station complying with Regulations 142 and 143.

(2) In special circumstances the Administration may require or permit a vessel to be fitted with one of the following radio stations as an alternative to the requirements of paragraph (1): (a) in a vessel of less than 75 metres in length a radiotelegraph station complying with Regulations 136 and 137; or (b) in a vessel of any size which remains, while at sea, within Very High Frequency (VHF) coverage of coast stations, a VHF radiotelephone station complying with Regulation 144.

In considering such special circumstances, the Administration shall have regard to the safety conditions at sea, including the maximum distance of the vessel from shore, the length of time the vessel is at sea, the absence of general navigational hazards likely to be encountered and the ability of the vessel to participate effectively in the maritime distress system.

Regulation 132 Exemptions (1) In exceptional circumstances, the Administration may grant to an individual vessel a complete, partial or conditional exemption from the requirements of Regulations 130 or 131.

(2) Each Administration shall submit to the Organization as soon as possible after the first of January in each year a report showing all exemptions granted under paragraph (1) during the previous calendar year and the reasons therefor.

PART B WATCHES Regulation 133 Watches-Radiotelegraph (1) A vessel fitted with a radiotelegraph station in accordance with Regulations 130 or 131 (2)(a) shall, while at sea, carry at least one radio officer or radio operator, and, if not fitted with a radiotelegraph auto alarm, such radio officer or radio operator shall, subject to the provisions of paragraph (3), listen continuously on the radiotelegraph distress frequency using headphones or a loudspeaker.

(2) (a) While a vessel fitted with a radiotelegraph station in accordance with Regulation 130 and fitted with a radiotelegraph auto alarm is at sea, a radio officer using headphones or a loudspeaker shall, subject to the provisions of paragraph (3), listen on the radiotelegraph distress frequency for at least 8 hours a day in the aggregate.

(b) While a vessel of less than 75 metres in length fitted with a radiotelegraph station in accordance with Regulation 131 (2)(a) and fitted with a radiotelegraph auto alarm is at sea, a radio officer or radio operator using headphones or a loudspeaker shall, subject to the provisions of paragraph (3), listen on the radiotelegraph distress frequency during such periods as may be determined by the Administration.

(3) (a) During the period when a radio officer or radio operator is required by this Regulation to listen on the radiotelegraph distress frequency, the radio officer or radio operator may discontinue such listening during the time when he is handling traffic on other frequencies, or when the radio officer is performing other essential radio duties, but only if it is impracticable to listen by split headphones or loudspeaker. The listening watch shall always be maintained by a radio officer or radio operator using headphones or loudspeaker during the silence periods provided for by the Radio Regulations. The term "essential radio duties" of the radio officer includes urgent repairs of: (i) equipment for radiocommunication used for safety; and (ii) radio navigational equipment by order of the skipper.

(b) In addition, on vessels other than multi-radio officer fishing vessels, the radio officer may, in exceptional cases, i.e. when it is impractical to listen by split headphones or loudspeaker, discontinue listening by order of the skipper in order to carry out maintenance required to prevent imminent malfunction of: (i) equipment for radiocommunication used for safety; (ii) radio navigational equipment; and (iii) other electronic navigational equipment including its repair; provided that; (iv) the radio officer, at the discretion of the Administration, is appropriately qualified to perform these duties; (v) a receiving selector is fitted which meets the requirements of the Radio Regulations; and (vi) the listening watch is always maintained by a radio officer using headphones or loudspeaker during the silence periods provided for by the Radio Regulation.

(4) In vessels fitted with a radiotelegraph auto alarm this radiotelegraph auto alarm shall, while the vessel is at sea, be in operation whenever there is no listening watch being maintained under paragraphs (2) or (3) and, whenever practicable, during direction-finding operations.

(5) The listening periods provided for by this Regulation, including those which are determined by the Administration, shall preferably be maintained during periods prescribed for the radiotelegraph service by the Radio Regulations.

Regulation 134 Watches-Radiotelephone (1) (a) On a vessel fitted only with a radiotelephone station in accordance with Regulation 131, a continuous watch shall, for safety purposes, while at sea, be maintained on the radiotelephone distress frequency in the place on board from which the vessel is usually navigated, by means of a radiotelephone distress frequency watch receiver, using a loudspeaker, a filtered loudspeaker or radiotelephone auto alarm.

(b) A vessel referred to in sub-paragraph (a) shall carry radiotelephone operators holding an appropriate certificate for radiotelephony (who may be any member of the crew) as follows: (i) vessels of 45 metres in length and over, at least two operators; and (ii) vessels of less than 45 metres in length, at least one operator.

If a vessel carries one radiotelephone operator exclusively employed for duties related to radiotelephony, a second operator need not be carried.

(2) On a vessel fitted with a radiotelegraph station in accordance with Regulations 130 or 131 (2)(a) a continuous watch shall be maintained, while at sea, on the radiotelephone distress frequency in a place to be determined by the Administration, by means of a radiotelephone distress frequency watch receive, using a loudspeaker, a filtered loudspeaker or radiotelephone auto alarm.

Regulation 135 Watches-VHF Radiotelephone (1) On a vessel fitted with a VHF radiotelephone station, in accordance with Regulation 131 (2)(b), a listening watch shall be maintained, while at sea, on the VHF radiotelephone distress frequency except when the VHF radiotelephone station is engaged in communications on a working frequency.

(2) On a vessel fitted with a VHF radiotelephone station required by a Party in order to promote the safety of navigation in waters near its coast, a listening watch shall be maintained in the wheelhouse for such periods and on such channels as may be prescribed by that Party.

PART C TECHNICAL REQUIREMENTS Regulation 136 Radiotelegraph Stations (1) The radiotelegraph station shall be so located that no harmful interference from extraneous mechanical or other noise will be caused to the proper reception of radio signals. The station shall be placed as high in the vessel as is practicable, so that the greatest possible degree of safety may be secured.

(2) The radiotelegraph operating room shall be of sufficient size and of adequate ventilation to enable the radiotelegraph station to be operated efficiently, and shall not be used for any purpose which will interfere with the operation of the radiotelegraph station.

(3) The sleeping accommodation of at least one radio officer shall be situated as near as practicable to the radiotelegraph operating room.

(4) An efficient two-way system for calling and voice communication shall be provided between the radiotelegraph operating room and the wheelhouse and one other place, if any, from which the vessel is navigated and which shall be independent of the main communication system of the vessel.

(5) The radiotelegraph station shall be installed in such a position that it will be protected against the harmful effects of water or extremes of temperature. It shall be readily accessible both for immediate use in case of distress and for repair.

(6) A reliable clock with a dial not less than 125 millimetres in diameter and a concentric seconds hand, the face of which is marked to indicate the silence periods prescribed for the radiotelegraph service by the Radio Regulations, shall be provided. It shall be securely mounted in the radiotelegraph operating room in such a position that the entire dial can be easily and accurately observed by the radio officer or radio operator from the radiotelegraph operating position and from the position for testing the radiotelegraph auto alarm receiver.

(7) A reliable emergency light shall be provided in the radiotelegraph operating room, consisting of an electric lamp permanently arranged so as to provide satisfactory illumination of the operating controls of the radiotelegraph station and of the clock required by paragraph (6). This lamp shall, if supplied from the reserve source of energy, be controlled by two-way switches placed near the main entrance to the radiotelegraph operating room and at the radiotelegraph operating position, unless the layout of the radiotelegraph operating room does not warrant it. These switches shall be clearly labelled to indicate their purpose.

(8) Either an electric inspection lamp, operated from the reserve source of energy and provided with a flexible lead of adequate length, or a flashlight shall be provided and kept in the radiotelegraph operating room.

(9) The radiotelegraph station shall be provided with such maintenance manuals, spare parts, tools and testing equipment as will enable the radiotelegraph station to be maintained in efficient working condition while at sea. The testing equipment shall include at least a portable multimeter capable of accurately measuring alternating currents and voltages, direct currents and voltages, and resistance values likely to be encountered in servicing the station.

(10) If a separate emergency radiotelegraph operating room is provided the requirements of paragraphs (4), (5), (6), (7) and (8) shall apply to it.

Regulation 137 Radiotelegraph Installations (1) Except as otherwise expressly provided in this Regulation: (a) other than in a vessel fitted with a reserve Medium Frequency (MF) radiotelegraph installation, the radiotelegraph installation shall be electrically separate and electrically independent of the radiotelephone installation referred to in Regulation 143; (b) the installation shall include a transmitter, a receiver and a main source of energy; (c) a main antenna shall be provided and installed and, if suspended between supports liable to whipping, shall be suitably protected against breakage; (d) a spare antenna completely assembled for immediate installation shall be carried; and (e) sufficient antenna wire and insulators shall in all cases be provided to enable a suitable antenna to be erected.

(2) (a) The transmitter shall be capable of being quickly connected with and tuned to the main antenna and the spare antenna when erected.

(b) The receiver shall be capable of being quickly connected with any antenna with which it is required to be used.

(3) The transmitter shall be capable of transmitting on the radiotelegraph distress frequency using a class of emission assigned by the Radio Regulations for that frequency. In addition, the transmitter shall be capable of transmitting on at least two working frequencies in the authorized bands between 405 kilohertz and 535 kilohertz, using classes of emission assigned by the Radio Regulations for these frequencies.

(4) The transmitter shall, if modulated emission is prescribed by the Radio Regulations, have a depth of modulation of not less than 70 per cent and a note frequency between 450 hertz and 1350 hertz.

(5) The transmitter shall, when connected to the main antenna, have a minimum normal range on 500 kilohertz as specified in this paragraph and shall be capable of transmitting clearly perceptible signals from ship to ship by day and under normal conditions and circumstances over the following minimum normal ranges* : [* See Guidance for Determining the Minimum Normal Range of Transmitters contained in Recommendation 10 of Attachment 3 to the Final Act of the Conference.] (a) 150 miles in vessels of 75 metres in length and over; (b) 100 miles in vessels of a length of less than 75 metres but of 45 metres and over; and (c) 50 miles in vessels of less than 45 metres in length.

(Clearly perceptible signals will normally be received if the root mean square value of the field strength at the receiver is at least 50 microvolts per metre.) (6) (a) The receiver shall be capable of receiving the radiotelegraph distress frequency and the classes of emission assigned by the Radio Regulations for that frequency.

(b) In addition, the receiver shall permit the reception of such of the frequencies and classes of emission used for the transmission of time signals, meteorological messages and such other communications relating to safety of navigation as may be considered necessary by the Administration.

(7) The receiver shall have sufficient sensitivity to produce signals in headphones or by means of a loudspeaker when the receiver input is as low as 50 microvolts.

(8) There shall be available at all times, while the vessel is at sea, a supply of electrical energy sufficient to operate the installation over the normal range required by paragraph (5) as well as for the purpose of charging any batteries forming part of the radiotelegraph station. The voltage of the supply for the installation shall, in the case of new vessels, be maintained within plus or minus 10 per cent of the rated voltage. In the case of existing vessels, it shall be maintained as near the rated voltage as possible and, if practicable, within plus or minus 10 per cent.

(9) Where a reserve MF radiotelegraph installation is fitted or a radiotelegraph installation is fitted as the main installation under the provisions of Regulation 131 (2)(a), a reserve source of energy complying with Regulation 143(9), (10), (11) and (12), with sufficient capacity to operate the transmitter and receiver for at least 6 hours continuously, shall be provided.

(10) While the vessel is at sea, accumulator batteries shall be brought up to the normal fully charged condition daily.

(11) All steps shall be taken to eliminate so far as is possible the causes of, and to suppress, radio interference from electrical and other apparatus on board. If necessary, steps shall be taken to ensure that the antennae attached to broadcast receivers do not cause interference to the efficient or correct working of the radiotelegraph installation.

Particular attention shall be paid to this requirement in the design of new vessels.

(12) In addition to a means for manually transmitting the radiotelegraph alarm signal, an automatic radiotelegraph alarm signal keying device shall be provided capable of keying the transmitter so as to transmit the radiotelegraph alarm signal. The device shall be capable of being taken out of operation at any time in order to permit immediate manual operation of the transmitter. If electrically operated, this keying device shall be capable of operation from the reserve source of energy.

(13) All items of equipment forming part of the radiotelegraph station shall be reliable, and shall be so constructed that they are readily accessible for maintenance purposes.

Regulation 138 Radiotelegraph Auto Alarms (1) A radiotelegraph auto alarm shall comply with the following minimum requirements: (a) in the absence of interference of any kind it shall be capable of being actuated, without manual adjustment, by any radiotelegraph alarm signal transmitted on the radiotelegraph distress frequency by any coast station, ship's or vessel's emergency or survival craft transmitter operating in accordance with the Radio Regulations, provided that the strength of the signal at the receiver input is greater than 100 microvolts and less than 1 volt; (b) in the absence of interference of any kind it shall be actuated by either three or four consecutive dashes when the dashes vary in length from 3.5 to as near 6 seconds as possible and the spaces vary in length between 1.5 seconds and the lowest practicable value, preferably not greater than 10 milliseconds; (c) it shall not be actuated by atmospherics or by any signal other than the radiotelegraph alarm signal, provided that the received signals do not in fact constitute a signal falling within the tolerance limits referred to in sub-paragraph (b); (d) the selectivity of the radiotelegraph auto alarm shall be such as to provide a practically uniform sensitivity over a band extending not less than 4 kilohertz and not more than 8 kilohertz on each side of the radiotelegraph distress frequency and to provide outside this band a sensitivity which decreases as rapidly as possible in conformity with the best engineering practice; (e) if practicable, if shall, in the presence of atmospherics or interfering signals, automatically adjust itself so that within a reasonably short time it approaches the condition in which it can most readily distinguish the radiotelegraph alarm signal; (f) when actuated by a radiotelegraph alarm signal, or in the event of failure of the apparatus, it shall cause a continuous audible warning to be given in the radiotelegraph operating room, in the radio officer's or radio operator's sleeping accommodation and in the wheelhouse. If practicable, warning shall also be given in the case of failure of any part of the whole alarm receiving system. Only one switch for stopping the warning shall be provided and this shall be situated in the radiotelegraph operating room; (g) for the purpose of regularly testing the radiotelegraph auto alarm, the apparatus shall include a generator pre-tuned to the radiotelegraph distress frequency and a keying device by means of which a radiotelegraph alarm signal of the minimum strength referred to in sub-paragraph (a) is produced. Means shall also be provided for attaching headphones for the purpose of listening to signals received on the radiotelegraph auto alarm; and (h) it shall be capable of withstanding vibration, humidity and changes of temperature, equivalent to severe conditions experienced on board vessels at sea, and shall continue to operate under such conditions.

(2) Before a new type of radiotelegraph auto alarm is approved, the Administration shall be satisfied, by practical tests made under operating conditions equivalent to those obtaining in practice, that the apparatus complies with paragraph (1).

(3) In vessels fitted with a radiotelegraph auto alarm, its efficiency shall be tested by a radio officer or radio operator at least once every 24 hours while at sea. If it is not in working order, the radio officer or radio operator shall report that fact to the skipper or officer on watch.

(4) A radio officer or radio operator shall periodically check the proper functioning of the radiotelegraph auto alarm receiver, with its normal antenna connected, by listening to signals and by comparing them with similar signals received on the radiotelegraph distress frequency on the main installation.

(5) As far as practicable, the radiotelegraph auto alarm, when connected to an antenna, shall not affect the accuracy of the direction-finder.

Regulation 139 Direction-Finders (1) (a) The direction-finding apparatus required by Regulation 153 shall be efficient and capable of receiving signals with the minimum of receiver noise and of taking bearings from which the true bearing and direction may be determined.

(b) It shall be capable of receiving signals on the radiotelegraph frequencies assigned by the Radio Regulations for the purposes of distress and direction-finding and for maritime radio beacons.

(c) In the absence of interference the direction-finding apparatus shall have a sensitivity sufficient to permit accurate bearings being taken on a signal having a field strength as low as 50 microvolts per metre.

(d) As far as is practicable, the direction-finding apparatus shall be so located that as little interference as possible from mechanical or other noise will be caused to the efficient determination of bearings.

(e) As far as is practicable, the direction-finding antennae system shall be erected in such a manner that the efficient determination of bearings will be hindered as little as possible by the close proximity of other antennae, derricks, wire halyards or other large metal objects.

(f) An efficient two-way means of calling and voice communication shall be provided between the direction-finder and the wheelhouse.

(g) All direction-finders shall be calibrated to the satisfaction of the Administration on first installation. The calibration shall be verified by check bearings or by a further calibration whenever any changes are made in the position of any antennae or of any structures on deck which might affect appreciably the accuracy of the direction-finder.

The calibration particulars shall be checked at yearly intervals, or as near thereto as possible. A record shall be kept of the calibrations and of the checks made of their accuracy.

(2) (a) The direction-finding apparatus and radio equipment for homing on the radiotelephone distress frequency shall be capable of taking direction-finding bearings on that frequency without ambiguity of sense within an arc of 30 degrees on either side of the bow. Installation and testing of this equipment shall be to the satisfaction of the Administration. * [* See the relevant Recommendation of the International Radio Consultative Committee (CCIR).] (b) All reasonable steps shall be taken to ensure the homing capability. Where due to technical difficulties the homing capability cannot be achieved, the Administration may exempt individual vessels from this requirement.

Regulation 140 Radiotelegraph Installation for Fitting in MotorLifeboats (1) The radiotelegraph installation required by Regulation 123 shall include a transmitter, a receiver and a source of energy. It shall be so designed that it can be used in an emergency by an unskilled person.

(2) The transmitter shall be capable of transmitting on the radiotelegraph distress frequency using a class of emission assigned by the Radio Regulations for that frequency. The transmitter shall also be capable of transmitting on the frequency, and of using a class of emission, assigned by the Radio Regulations for use by survival craft in the bands between 4000 kilohertz and 27500 kilohertz.

(3) The transmitter shall, if modulated emission is prescribed by the Radio Regulations, have a depth of modulation of not less than 70 per cent and a note frequency between 450 hertz and 1350 hertz.

(4) In addition to a key for manual transmissions the transmitter shall be fitted with an automatic keying device for the transmission of the radiotelegraph alarm and distress signals.

(5) On the radiotelegraph distress frequency the transmitter shall have a minimum normal range as specified in Regulation 137 (5) of 25 miles using the fixed antenna. * [* See Guidance for Determining the Minimum Normal Range of Transmitters contained in Recommendation 10 of Attachment 3 to the Final Act of the Conference.] (6) The receiver shall be capable of receiving the radiotelegraph distress frequency and the classes of emission assigned by the Radio Regulations for that frequency.

(7) The source of energy shall consist of an accumulator battery with sufficient capacity to supply the transmitter for four hours continuously under normal working conditions. If the battery is of a type that requires charging, means shall be available for charging it from the vessel's power supply. In addition there shall be a means for charging it after the lifeboat has been launched.

(8) When the power for the radiotelegraph installation and the searchlight required by Regulation 123 are drawn from the same battery, it shall have sufficient capacity to provide for the additional load of the searchlight.

(9) A fixed-type antenna shall be provided together with means for supporting it at the maximum practicable height. In addition an antenna supported by a kite or balloon shall be provided if practicable.

(10) At sea a radio officer shall at weekly intervals test the transmitter using a suitable artificial antenna, and shall bring the battery up to full charge if it is of a type which requires charging.

Regulation 141 Portable Radio Apparatus for Survival Craft andEmergency Position-Indicating Radio Beacon (EPIRB) The Administration shall prescribe the technical criteria, maintenance and tests for the portable transmitter/receiver and emergency position-indicating radio beacon, required by Regulation 122.

Regulation 142 Radiotelephone Stations (1) The radiotelephone station shall be placed in the upper part of the vessel and so located that it is sheltered to the greatest possible extent from noise which might impair the correct reception of messages and signals.

(2) There shall be efficient communication between the radiotelephone station and the wheelhouse.

(3) A reliable clock with a dial not less than 125 millimetres in diameter, the face of which is marked to indicate the silence periods prescribed for the radiotelephone service by the Radio Regulations, shall be provided. It shall be securely mounted in such a position that the entire dial can be easily and accurately observed by the operator.

(4) A card of instructions giving a clear summary of the radiotelephone distress procedure shall be displayed in full view of the radiotelephone operating position.

(5) A reliable emergency light shall be provided, independent of the system which supplies the normal lighting of the radiotelephone installation and permanently arranged so as to be capable of providing adequate illumination of the operating controls of the radiotelephone installation, the clock and the card of instructions.

(6) Where a source of energy consists of a battery or batteries, the radiotelephone station shall be provided with a means of assessing the charge condition.

Regulation 143 Radiotelephone Installations (1) The radiotelephone installation shall include transmitting and receiving equipment and appropriate sources of energy (referred to in this Regulation as the transmitter, the receiver, the radiotelephone distress frequency watch receiver, and the source of energy respectively).

(2) The transmitter shall be capable of transmitting on the radiotelephone distress frequency and on at least one other frequency in the bands between 1605 kilohertz and 2850 kilohertz, using the classes of emission assigned by the Radio Regulations for these frequencies. In normal operation a double sideband transmission or a single sideband transmission with full carrier (i.e. A3H) shall have a depth of modulation of at least 70 per cent at peak intensity. Modulation of a single sideband transmission with reduced or suppressed carrier (A3A, A3J) shall be such that the unwanted emission shall not exceed the values given in the Radio Regulations.

(3) (a) In vessels of 45 metres in length and over, the transmitter shall have a minimum normal range of 150 miles and shall be capable of transmitting clearly perceptible signals from ship to ship by day and under normal conditions and circumstances over this range. * (Clearly perceptible signals will normally be received if the root mean square value of the field strength produced at the receiver by an unmodulated carrier is at least 25 microvolts per metre for A3 and A3H emissions.) [* See Guidance for Determining the Minimum Normal Range of Transmitters contained in Recommendation 10 of Attachment 3 of the Final Act to the Conference.] (b) In vessels of less than 45 metres in length the transmitter shall produce a power in the antenna of at least 15 watts for A3 emission or 60 watts for A3H emission. In any case the transmitter shall have a minimum normal range of at least 75 miles.

(4) The transmitter shall be fitted with a device for generating the radiotelephone alarm signal by automatic means so designed as to prevent actuation by mistake. The device shall be capable of being taken out of operation at any time in order to permit the immediate transmission of a distress message. Arrangements shall be made to check periodically the proper functioning of the device on frequencies other than the radiotelephone distress frequency using a suitable artificial antenna.

(5) The device required by paragraph (4) shall comply with the following requirements: (a) The tolerance of the frequency of each tone shall be plus or minus 1.5 per cent; (b) the tolerance on the duration of each tone shall be plus or minus 50 milliseconds; (c) the interval between successive tones shall not exceed 50 milliseconds; and (d) the radio of the amplitude of the stronger tone to that of the weaker shall be within the range of 1 to 1.2.

(6) The receiver required by paragraph (1) shall be capable of receiving the radiotelephone distress frequency and at least one other frequency available for maritime radiotelephone stations in the bands between 1605 kilohertz and 2850 kilohertz, using the classes of emission assigned by the Radio Regulations for these frequencies. In addition the receiver shall permit the reception of such other frequencies, using the classes of emission assigned by the Radio Regulations, as are used for the transmission by radiotelephony of meteorological messages and such other communications relating to the safety of navigation as may be considered necessary by the Administration. The receiver shall have sufficient sensitivity to produce signals by means of a loudspeaker when the receiver input is as low as 50 microvolts.

(7) The radiotelephone distress frequency watch receiver shall be pre-set to this frequency. It shall be provided with a filtering unit or a device to silence the loudspeaker in the absence of a radiotelephone alarm signal. The device shall be capable of being easily switched in and out and may be used when, in the opinion of the skipper, conditions are such that maintenance of the listening watch would interfere with the safe navigation of the vessel.

(8) To permit rapid change-over from transmission to reception when manual switching is used, the control for the switching device shall, where practicable, be located on the microphone or the telephone handset.

(9) (a) While the vessel is at sea, there shall be available at all times a main source of energy sufficient to operate the installation over the normal range required in paragraph (3).

(b) A reserve source of energy shall be provided: (i) in the upper part of vessels of 45 metres in length and over; and (ii) in a position as high as practicable in vessels of less than 45 metres in length, which under all circumstances shall have sufficient capacity to operate the transmitter and receiver for at least 6 hours continuously under normal working conditions. * [* See Guidance for Determining the Electrical Load of the Reserve Source of Energy of Radio Installations contained in Recommendation 11 of Attachment 3 to the Final Act of the Conference.] (c) If the reserve source of energy supplies several of the radio installations mentioned in paragraph (10) its capacity shall be sufficient to operate the transmitter and receiver of these installations continuously and simultaneously for at least 6 hours unless one switchgear permits the selective operation of the radio installations.

(d) The reserve source of energy may also be used as the main source of energy, provided that the manner of installation and use is such that these requirements are met at all times when the vessel is at sea.

(e) A reserve source of energy is not required for the radiotelephone installation if a reserve medium frequency radiotelegraph installation with a reserve source of energy is fitted.

(10) The reserve source of energy shall be used to supply only: (a) the radiotelephone installation; (b) the radiotelegraph installation or the reserve radiotelegraph installation, including the radiotelegraph auto alarm and the device required by Regulation 137(12) for keying radiotelegraph alarm signals if electrically operated.

(c) the VHF installation; (d) the emergency light required by Regulation 142(5); and (e) the device required by paragraph (4) for generating the radiotelephone alarm signal.

(11) Notwithstanding the provisions of paragraph (10), the Administration may authorize the use of the reserve source of energy for a direction-finder, if fitted, and for a number of low-power emergency circuits which are wholly confined to the upper part of the vessel such as emergency lighting on the embarkation station for survival craft, on condition that the additional loads can be readily disconnected, and that the source of energy is of sufficient capacity to carry them.

(12) While the vessel is at sea, any battery provided shall be kept charged so as to meet the requirements of paragraph (9) and in any case shall be capable of being brought to a fully charged state within a period of 16 hours.

(13) An antenna shall be provided and installed and, if suspended between supports liable to whipping, shall be protected against breakage.

In addition, a spare antenna shall be carried on board completely assembled for immediate replacement or, where this is not practicable, sufficient antenna wire and insulators to enable a spare antenna to be erected. The necessary tools to erect an antenna shall also be provided.
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