(1) Cargo ports and other similar openings in
the sides of ships below the freeboard deck shall be fitted with doors
so designed as to ensure the same watertightness and structural integrity
as the surrounding shell plating. Unless otherwise granted by the
Administration, these opening shall open outwards. The number of such
openings shall be the minimum compatible with the design and proper
working of the ship.
(2) Unless otherwise permitted by the Administration,
the lower edge of openings referred to in paragraph (1) shall not
be below a line drawn parallel to the freeboard deck at side, which
is at its lowest point at least 230 mm above the upper edge of the
uppermost load line.
(3) Where it is permitted to arrange cargo ports
and other similar openings with their lower edge below the line specified
in paragraph (2), additional features shall be fitted to maintain
the watertight integrity.
(4) The fitting of a second door of equivalent
strength and watertightness is one acceptable arrangement. A leakage
detection device shall be provided in the compartment between the
two doors. Drainage of this compartment to the bilges, controlled
by a readily accessible screw down valve, shall be arranged. The outer
door shall open outwards.
(5) Arrangements for bow doors and their inner
doors, side doors and stern doors and their securings shall be in
compliance with the requirements of a recognised organization, or
with the applicable national standards of the Administration which
provide an equivalent level of safety.