BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown in illustration D042RR below. Vessel "A" sounds one short blast on the whistle. Vessel "B" is which of the following in this scenario?
• Rule 15 – Crossing Situation: In a crossing situation between two power-driven vessels, which vessel must keep out of the way? • Relative position: Which vessel has the other on her starboard side versus port side in the picture? • The meaning of one short blast in meeting/crossing situations (intention to leave the other vessel on your port side).
• From each vessel’s perspective, ask: where is the other vessel – on my port bow or starboard bow? • Once you decide who must keep out of the way under Rule 15, what is the correct name for the other vessel in the list of choices? • Does sounding one short blast change which vessel is required to keep out of the way, or does it simply state an intended maneuver?
• Identify clearly which vessel has the other on her starboard side – that vessel is the give-way vessel under Rule 15. • Confirm that neither vessel is coming from more than 22.5° abaft the beam, so this is not an overtaking situation. • Match the correct COLREGS terminology: give-way vessel vs stand-on vessel vs the older term burdened vessel.
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