(1) This Part applies to any vessel carrying or having recently carried a cargo of petroleum products in bulk, having a true flashpoint of 61°C or greater as if it were an oil vessel except ¾

(a) to the extent that the Marine Manager may otherwise direct; and

(b) that smoking is permitted in spaces not opening on to weather decks and which have been approved for that purpose by the Master.

(2) A direction under sub-bylaw (1)(a) must be in writing and ¾

(a) placed at the foot of each gangway onto; and

(b) attached to the principal mast of,

the vessel by the Marine Manager.