13.3.1 Lifebuoys should be marked with the vessel's
name and one other means of identification, e.g. Port of Choice, SSR
number, home port if not registered, etc.
13.3.2 Vessels certified to operate in Categories
4, 5 & 6 need not carry lifebuoys fitted with lights.
13.3.3 Buoyant lines, where fitted, should not
be less than 18 metres in length.
13.3.4 Where light-weight lifebuoys (e.g. horseshoe
type) are used, if not fitted with a buoyant line, they shall be fitted
with a drogue (the drogue is required to prevent the lifebuoy being
blown across the sea surface at high speed).
13.3.5 For sailing vessels, the Dan-buoy should
be attached to one of the lifebuoys and where applicable, a light.