Instruction manual

PROFICIENCY IN SURVIVAL CRAFT AND RESCUE BOATS OTHER THAN
FAST RESCUE BOATS
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Fig.4.5 Free-Fall lifeboats
4.1.7 Totally enclosed lifeboat with a self contained air support systems
The self-contained air support system shall be so arranged that when
proceeding with all entrances and openings closed, the air within the lifeboat
remains safe and breathable and the engine runs normally for a period of not
less than 10 minutes.
During the period described (10 min) the atmospheric pressure inside the
lifeboat shall never fall below the atmospheric pressure, nor shall it exceed it by
more than 20 m/bar.
The self-contained air support system shall have provided visual indicators
to indicate the pressure of the air supply within the system at all times.
4.1.8 Fire protected totally enclosed lifeboat
The lifeboat, when waterborne shall be capable of protecting the number of
persons it is permitted to accommodate, when subjected to a continuous oil fire
that envelops the lifeboat for a period of not less than 8 minutes.
Water spray system
A lifeboat that has fitted a water spray system shall comply with the
following:
- water for the system shall be drawn from the sea by a self-priming
motor pump, and it shall be possible to turn "on" and turn "off" the flow of water
over the exterior of the lifeboat;
- the sea water intake shall be so arranged as to prevent the intake of
flammable liquids from the sea surface; and,