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- Apprentice Mate Steersman (Western Rivers (Any Appropriate Tonnage)) »
- Q300 - Rules of the Road: Inland
742. BOTH INTERNATIONAL & INLAND A vessel is towing and carrying the required lights on the masthead. What is the visibility arc of these lights?
Masthead lights, including those used for towing, must display a 225 arc of visibility as defined by Navigation Rule 21(a). This rule specifies the arc extends from right ahead to 22.5 abaft the beam on each side, and applies regardless of whether a vessel is engaged in towing operations.
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