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Sidelights in vessels under 20 m

  • Description of scenario: Type of vessel: Vessels of less than 20 m in length
    Time of the day: From sunset to sunrise and from sunrise to sunset in restricted visibility
  • Rule(s) to be applied: Rule 21 (Definitions)
  • Applying the Rule(s) and comments: In accordance with Rule 21 (b) (Definitions), "sidelights " means a green light on the starboard side and a red light on the port side each showing an unbroken light over an arc of the horizon of 112.5° and so fixed as to show the light from right ahead to 22.5° abaft the beam on its respective side.
    In accordance with Rule 21 (b) (Definitions), in a vessel of less than 20 m in length the sidelights may be combined in one lantern carried on the fore-and-aft centreline of the vessel.
  • Lights positions:

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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.