For water freeing arrangements generally, see Section 6 and for freeboard requirements, see Section
12.
4.3.2.1 For motor vessels, a recess in a weather
deck complying with Section 4.3.1.1, should be of watertight construction
and have means of drainage capable of efficient operation when the
vessel is heeled to 10°. Such drainage is to have an effective
area, excluding grills and baffles, of at least 20cm2 for
each cubic metre of volume of recess below the weather deck.
4.3.2.2 For sailing vessels, recesses in the weather
deck should be of watertight construction and have:-
-
.1 a total volume (Vc) which does not exceed the
value obtained from the following formula:-
- Where:
|
V |
= |
is the volume of the recess |
|
F |
= |
is the freeboard abreast the recess |
|
n |
= |
is the number of recesses considered. |
-
.2 means of drainage capable of efficient operation
when the vessel is heeled to 30°. Such drainage to have an effective
area, excluding grills and baffles, of at least 10cm2 for
a vessel operating in Area Category 2, 3 or 4 and of at least 20cm2 for
a vessel operating in Area Category 0 or 1.
4.3.2.3 Alternative arrangements for the size
and drainage of a recess may be accepted provided it can be demonstrated
that, with the vessel upright and at its deepest draught, the recess
drains from a swamped condition within 3 minutes; or the cockpit or
recess should comply with ISO 11812 (Small Craft - Watertight and
Quick Draining Cockpits) for the relevant design category as shown
in the table in Section 11.9.5
4.3.2.4 If a recess is provided with a locker
which gives direct access to the interior of the hull, the locker
should be fitted with weathertight cover(s). In addition the cover(s)
to the locker should be permanently attached to the vessel's structure
and fitted with efficient locking devices to secure the cover(s) in
the closed position.