Rule 23 (Power-driven vessels underway)

A Power-Driven Vessel underway shall exhibit:

A Power-Driven Vessel Underway of more than 50 m in length additional light shall exhibit:

An Air-Cushion Vessel when operating in the non-displacement mode shall exhibit:

A WIG Craft only when taking off, landing and in flight near the surface shall exhibit:

A Power-Driven Vessel underway of less than 12 m in length may exhibit:

A Power-Driven Vessel underway of less than 7 m in length whose maximum speed does not exceed 7 knots may exhibit:

A Power-driven vessel of less than 7 m in length whose maximum speed does not exceed 7 knots but practicable shall exhibit:

A Power-Driven Vessel underway of less than 12 m in length may be displaced the masthead light or all-round white light on the

A Power-Driven Vessel underway of less than 12 m in length if centreline fitting is not practicable provided that the