(3) A lifebuoy that has a buoyant lifeline attached to it shall not have a self-igniting light or a self-activating smoke signal attached to it.

(i) where the ship is under 45.7 m in length, at least four lifebuoys, two of which each have a self-igniting light attached and another two of which each have a buoyant lifeline attached, and

(ii) where the ship is 45.7 m or over in length, at least six lifebuoys, two of which each have a self-igniting light attached and two others of which each have a buoyant lifeline attached;