A+ A A-

Sound signals when altering course to starboard

  • Description of scenario: Vessel A: Power-driven vessel underway , when manoeuvring
    Vessels are in sight of one another
  • Rule(s) to be applied: Rule 34 (Manoeuvring and warning signals)
  • Applying the Rule(s) and comments: In accordance with Rule 34 (a) (Manoeuvring and warning signals), a vessel altering its course to starboard (vessel A) shall indicate that manoeuvre by one short blast on her whistle.
    In accordance with Rule 34 (f) (Manoeuvring and warning signals), if whistles are fitted on a vessel at a distance apart of more than 100 m, one whistle only shall be used for giving manoeuvring and warning signals.
  • 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.