22.25 Sailing vessels underway and vessels under oars

(1) A sailing vessel underway must exhibit:

(a) sidelights; and

(b) a sternlight.

A sailing vessel of less than 20 metres in length may combine the sidelights and sternlight into 1 tricoloured lantern carried at or near the top of the mast where it can best be seen.

(2) In addition to the lights required in rule 22.25(1), a sailing vessel underway may exhibit at or near the top of the mast, where they can best be seen, two all-round lights in a vertical line. The upper must be red and the lower green,

BUT these lights must not be exhibited in conjunction with the tricoloured lantern.

(3) (a) A sailing vessel of less than 7 metres in length must, if practicable, exhibit the sidelights and sternlight as prescribed in rule 22.25(1),

BUT if it does not do so, it must have ready an electric torch or lighted lantern showing a white light which must be exhibited in sufficient time to prevent collision.

(b) A vessel under oars may exhibit the lights prescribed in this rule for sailing vessels,

BUT if it does not do so, it must have ready an electric torch or lighted lantern showing a white light which must be exhibited in sufficient time to prevent collision.

(4) A vessel proceeding under sail when also being propelled by machinery must exhibit a black conical shape, apex downwards, forward where it can best be seen. At night it must exhibit the lights for a power-driven vessel prescribed in rule 22.23 instead of those prescribed in rule 22.25.