Every ship for the time being regularly engaged on voyages to or within the Tropics or the Persian Gulf shall be provided with-
(a) awnings suitable to cover such area of any deck space provided pursuant to section 26(8) for the recreation of the crew as will, when covered with the awnings, provide a shaded area of adequate extent having regard to the number of persons in the crew and to any shade provided on that deck space by overhanging decks; and
(b) stanchions or other suitable supports for those awnings.