2.1
Bilge wells are recessed areas
where water accumulates before entering the bilges.
2.2
Bulkhead deck in a passenger
ship means the uppermost deck at any point in the subdivision length
(Ls
) to which the main bulkheads and the ship’s
shell are carried watertight and the lowermost deck from which passenger
and crew evacuation will not be impeded by water in any stage of flooding
for damage cases defined in regulation 8 and in part B-2 of SOLAS chapter II-1. The
bulkhead deck may be a stepped deck. In a cargo ship the freeboard
deck may be taken as the bulkhead deck.
2.3
Drains, as used in these Guidelines,
refer to either scupper wells and scuppers, freeing ports, or bilge
wells and drain pipes.
2.4
Freeing ports are openings in
the bulwarks on the open deck to allow water to drain directly overboard.
2.5
Scuppers are a system of gravity
deck drains and connected piping leading from scupper wells to the
sideshell of the ship or to the bilge system.
2.6
Scupper wells are recessed areas
in the deck where water accumulates before entering the scuppers.