Part I INFLATABLE LIFERAFTS
Every inflatable liferaft shall comply with the following requirements:—
the liferaft shall be so constructed that, when fully inflated and floating with the cover uppermost, it shall be stable in a seaway;
the liferaft shall be so constructed that if it is dropped into the water from a height of 18 metres, neither the liferaft nor its equipment will be damaged;
the construction of the liferaft shall include a cover of a highly visible colour which shall automatically be set in place when the liferaft is inflated. This cover shall be capable of protecting the occupants against injury from exposure, and means shall be provided for collecting rain. The top of the cover shall be fitted with a lamp which derives its luminosity from a sea-activated cell and a similar lamp shall also be fitted inside the liferaft;
the liferaft shall be fitted with a painter and shall have a lifeline becketed round the outside. A lifeline shall also be fitted round the inside of the liferaft;
the liferaft shall be capable of being readily righted by one person if it inflates in an inverted position;
the liferaft shall be fitted at each opening with efficient means to enable persons in the water to climb on board;
the liferaft shall be contained in a valise or other container so constructed as to be capable of withstanding hard wear under conditions encountered at sea. The liferaft in its valise or other container shall be inherently buoyant;
the buoyancy of the liferaft shall be so arranged as to ensure by a division into an even number of separate compartments, half of which shall be capable of supporting out of the water the number of persons which the liferaft is fit to accommodate, or by some other equally efficient means, that there is a reasonable margin of buoyancy if the raft is damaged or partially fails to inflate;
the total weight of the liferaft, its valise or other container and its equipment shall not exceed 180 kilogrammes;
the number of persons which a liferaft shall be deemed fit to accommodate shall be equal to—
the greatest whole number obtained by dividing by ·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
the greatest whole number obtained by dividing by 3720 the area measured in square centimetres of the floor (which for this purpose may include the thwart or thwarts if fitted) of the liferaft when inflated;
whichever number shall be the less;
the floor of the liferaft shall be waterproof and shall be capable of being sufficiently insulated against cold, either—
by means of one or more compartments which the occupants can inflate if they so desire, or which inflate automatically and can be deflated and re-inflated by the occupants; or
by other equally efficient means not dependent on inflation;
the liferaft shall be inflated by a gas which is not injurious to the occupants and the inflation shall take place automatically either on the pulling of a line or by some other equally simple and efficient method. Means shall be provided whereby a topping-up pump or bellows may be used to maintain pressure;
the liferaft shall be of suitable material and construction, and shall be so constructed as to be capable of withstanding exposure for 30 days afloat in all sea conditions;
every liferaft which is designed for use with a launching appliance shall be properly constructed for the purpose for which it is intended and shall be of sufficient strength to permit it to be safely lowered into the water when loaded with its full complement of persons and equipment;
the liferaft shall have a carrying capacity calculated in accordance with subparagraph (j) above of not less than six persons or more than 25 persons; provided that in vessels in which the total number of persons on board is less than six the minimum carrying capacity of the liferaft shall be four persons;
the liferaft shall be capable of operating throughout a temperature range of 66°C to minus 30°C;
the liferaft shall be fitted with arrangements enabling it to be readily towed;
every liferaft carried on a vessel which is provided with portable radio equipment which complies with the specification set forth in Part I of Schedule 13 to these Rules shall be provided with arrangements for accommodating properly in the operating position the aerial referred to in the specification set out in the said Schedule to these Rules.