Article 3.18 - Additional marking for vessels unable to manoeuvre

French | Russian

1. A vessel which is unable to manoeuvre shall, if necessary, display, in addition to the marking prescribed elsewhere in these regulations:

By night:

A swinging red light; in the case of small craft, this light may be white instead of red; or

Two red lights, about 1 m one above the other, placed in a suitable position and high enough to be visible from all directions;

By day:

A swinging red flag; or

Two black balls, about 1 m one above the other, placed in a suitable position and high enough to be visible from all directions.

2. If necessary, such vessels shall in addition give the regulation sound signal.