Hong Kong Regulations

MERCHANT SHIPPING (SEAFARERS) (CREW ACCOMMODATION) REGULATION - SECT 17

Sidescuttles and windows

(1) Subject to subsection (2), any sidescuttles or windows in a sleeping room,
day room, mess room, recreation room or hospital ward without which the
standard of lighting required for that room by section  15 (1) or (2) would
not be attained, shall, unless the room is served by an 
air conditioning system complying with section 16, be of the opening type; if
the room is served by such an air conditioning system then only 50% of such
sidescuttles or windows need be of the opening type.

(2) No sidescuttle or window shall be of the opening type if it is required by
any other regulation to be of a non-opening type.

(3) Where, by reason of the requirements of subsection (2), it is not possible
in respect of any room to comply fully with subsection (1), then-

   (a)  if that room is one in respect of which the requirements of section 16
        as to the type of ventilation system to be provided would have been
        adequately fulfilled by the provision of a natural system of inlet and
        exhaust ventilation then, notwithstanding those requirements, that
        room shall be provided with a trunked mechanical ventilation system;
        and

   (b)  if that room is one in respect of which the requirements of section 16
        as to the type of ventilation system to be provided would have been
        adequately fulfilled by the provision of a trunked mechanical 
        ventilation system then, notwithstanding those requirements, that room
        shall be provided with an air conditioning system.

(4) In every ship of 3000 tons or over every sidescuttle shall be at least 300
millimetres in diameter. (Enacted 1995)