USCG Exam Practice · Rule 7 — Risk of Collision
Under the Inland Navigation Rules, if any doubt exists as to whether risk of collision is present, how shall that doubt be resolved?
- AThe vessel shall reduce speed until the doubt is resolved.
- BRisk of collision shall be deemed to exist.✓ correct
- CThe vessel shall sound one prolonged blast and await a response.
- DRisk of collision shall be deemed not to exist until confirmed by radar.
Why B is correct
33 CFR §83.07(a) states explicitly that if there is any doubt, risk of collision shall be deemed to exist. The rule places the burden on the mariner to treat uncertainty as a positive determination of risk, not to wait for confirmation.
Cited:33 CFR §83.07
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