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A vessel engaged in underwater operations (restricted in her ability to manoeuvre, underway, an obstruction exists on her port side) - shapes

  • Description of scenario: Type of vessel: Vessel engaged in underwater operations, when restricted in her ability to manoeuvre, underway and an obstruction exists on her port side
    Time of the day: Daytime
  • Rule(s) to be applied: Rule 27 (Vessels not under command or restricted in their ability to manoeuvre)
  • Applying the Rule(s) and comments: In accordance with Rule 27 (d) (Vessels not under command or restricted in their ability to manoeuvre), a vessel engaged in underwater operations, when restricted in her ability to manoeuvre, shall exhibit shapes prescribed in Rule 27 (b)(ii) and shall in addition, when an obstruction exists, exhibit:
    (i) two balls in a vertical line to indicate the side on which the obstruction exists;
    (ii) two diamonds in a vertical line to indicate the side on which another vessel may pass.
    In accordance with Rule 27 (b)(ii) (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 three shapes in a vertical line where they can best be seen. The highest and lowest of these shapes shall be balls and the middle one a diamond.

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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.