(1)The master of any vessel arriving at the port with ammunition, explosives, or over 100 lb. (45 Kgs.) in weight of gun powder, on board a cargo, shall display a red flag 'B' of the International Code at the fore during day-time ; and between sunset and sunrise shall exhibit, when at anchor, a white light over three red lights hoisted in a vertical line one over the other not less than 3 (three) feet apart for such time as the ammunition, explosives or gunpowder may be on board within port limits.
