INTERNATIONAL ONLY In a narrow channel, a signal of intent which must be answered by the other vessel, is sounded during which of the following situations?
• COLREGS Rule 9 – Narrow Channels (International Rules) • Difference between maneuvering signals (1, 2, 3 short blasts) and overtaking signals that require agreement • When an exchange of sound signals is needed versus just an indication of your own action
• Ask yourself: In a narrow channel, when does one vessel need the other vessel to agree to a proposed maneuver before proceeding? • Which situations in the choices are covered by special narrow channel rules, rather than the general meeting/crossing rules? • Does every use of the whistle in a narrow channel automatically require the other vessel to answer, or only specific circumstances?
• Verify in Rule 9(e) which situation mentions “shall indicate her intention by sounding…” and requires a response from the vessel being affected. • Check whether crossing and head-on meeting in narrow channels use the same “agreement” signals as the situation described in Rule 9(e). • Confirm which choice clearly involves seeking permission/consent from the other vessel before completing the maneuver.
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