INTERNATIONAL ONLY You are operating a vessel in a narrow channel. Your vessel must stay within the channel to be navigated safely. Another vessel is crossing your course from starboard to port, and you are in doubt as to his intentions. According to Rule 9, which statement is TRUE?
• Rule 9 – Narrow Channels (who has the right of way when one vessel is constrained to the channel) • The meaning of sound signals when in doubt about another vessel’s intentions • Difference between maneuvering signals (I am altering course) and warning/doubt signals (I don’t understand your intentions)
• Ask yourself: In a narrow channel, if you MUST stay in the channel to be safe, are you expected to suddenly back down, or first signal doubt/danger? • Look at which options are maneuvering signals and which option is a danger or doubt signal under the sound signals rules. • Think about what the Rules say you should do when you are in doubt as to the other vessel’s intentions—what specific sound signal is linked to that phrase?
• Verify which signal is defined in the Rules as the danger or doubt signal (used when you do not understand the other vessel’s intentions). • Check whether any choice describes a signal that actually means “I am altering my course to starboard/port” instead of expressing doubt. • Confirm that Rule 9 does not require an immediate engine maneuver (like backing down) before you have attempted to communicate doubt or danger.
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