Instruction manual

PROFICIENCY IN SURVIVAL CRAFT AND RESCUE BOATS OTHER THAN
FAST RESCUE BOATS
4 12
Enclosure
- every totally enclosed lifeboat shall be provided with a rigid watertight
enclosure which totally encloses the lifeboat.
The lifeboat enclosure shall be constructed and fitted so that:
- it protects the occupants against heat and cold;
- access into the lifeboat is provided by hatches which can be closed to
make the lifeboat watertight;
- hatches are positioned so as to allow launching and recovery
operations to be performed without any occupants having to leave the enclosure;
- access hatches are capable of being opened and closed from both
inside and outside and are equipped with a means to hold them securely in the
open position;
- it is possible to row the lifeboat;
- it is capable, when the lifeboat is in the capsized position with the
hatches closed and without significant leakage, of supporting the entire mass of
the lifeboat, including all equipment, machinery and its full complement of
persons;
- it includes windows or translucent panels on both sides, which admit
sufficient daylight to the inside of the lifeboat with the hatches closed, to make
artificial light unnecessary;
- its exterior is of a highly visible color and its interior of a color which
does not cause discomfort to the occupants;
- handrails provide a secure handhold for persons moving about the
exterior of the lifeboat, and aid embarkation and disembarkation;
- persons have access to their seats from an entrance without having to
climb over thwarts or other obstructions; and,
- the occupants are protected from the effects of dangerous sub-
atmospheric pressures which might be created by the lifeboat's engine.
Fig.4.4 Totally enclosed lifeboat
4.1.6 Free-Fall lifeboat