A+ A A-

A vessel restricted in her ability to manoeuvre when at anchor - lights

  • Description of scenario: Type of vessel: Vessel restricted in her ability to manoeuvre of more than 100 m in length when at anchor
    Time of the day: From sunset to sunrise and from sunrise to sunset in restricted visibility
  • Rule(s) to be applied: Rule 27 (Vessels not under command or restricted in their ability to manoeuvre)
    Rule 30 (Anchored vessels and vessels aground)
  • Applying the Rule(s) and comments: In accordance with Rule 27 (b) (Vessels not under command or restricted in their ability to manoeuvre), a vessel restricted in her ability to manoeuvre , except a vessel engaged in mine clearance operations, shall exhibit:
    (i) three all-round lights in a vertical line where they can best be seen. The highest and lowest of these lights shall be red and the middle light shall be white;
    (iv) the light or lights prescribed in Rule 30 (Anchored vessels and vessels aground).
    In accordance with Rule 30 (a) (Anchored vessels and vessels aground), a vessel at anchor shall exhibit where it can best be seen:
    (i) in the fore part, an all-round white light;
    (ii) at or near the stern and at a lower level that the light prescribed in subparagraph (i), an all-round white light.
    In accordance with Rule 30 (c) (Anchored vessels and vessels aground), a vessel of 100 m and more in length at anchor shall, also use the available working or equivalent lights to illuminate her decks.
  • Lights positions:

    Register for free to have a look at the lights from any direction and/or listen to sound signals!

Advanced COLREGs Course - Visit our advanced course for complex multi-rule and multi-ship scenarios!








This project has been funded with support from the European Commission.This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.