34.—(1) Subject to paragraph (4), in every ship engaged in voyages to—
(a)all ports on the coast of Africa and all ports in Asia, Central and South America between 30° North and 35° South latitude; or
(b)ports on the coast of the Malagasy Republic;
the crew accommodation, other than a recreation space on the open deck, shall be protected by means of screening against the admission of mosquitoes.
(2) The screening shall be made of rust-proof wire or other suitable material and shall be fitted to or provided for all sidescuttles and windows and skylights which are capable of being opened and all natural ventilators and doors leading to an open deck.
(3) Any screening door which is fitted pursuant to this regulation and leads directly into a permanent or temporary hospital shall be of a self-closing type.
(4) In crew accommodation served by an air conditioning system screening need not be provided for sidescuttles or windows fitted with special locking arrangements which (except where the sidescuttles and windows are used for escape purposes) can only be unlocked with the consent of the master, if all doors leading from that crew accommodation to the open deck are of the self-closing type.