Rules of the Road · Steering & Sailing Rules
Rule 17(a)(ii) permits the stand-on vessel to take action when:
- AThe CPA drops below 1 nautical mile
- BIt becomes apparent to her that the give-way vessel is not taking appropriate action✓ Correct
- CThe give-way vessel sounds the doubt signal of five short blasts
- DThe stand-on vessel's officer of the watch judges the situation to be unsafe
Explanation
Rule 17(a)(ii) allows the stand-on vessel to act when it becomes apparent the give-way vessel is NOT taking appropriate action. This is a permission, not a requirement at that stage. The stand-on vessel should not act prematurely but should not wait until collision is inevitable.
Authority: 72 COLREGS Rule 17(a)(ii)
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