USCG Exam Practice · Danger bearings and danger circles
According to the Navigation Rules, risk of collision shall be deemed to exist when which of the following conditions is observed?
- AThe range to an approaching vessel is decreasing and the compass bearing does not appreciably change✓ correct
- BThe relative bearing of an approaching vessel is drawing aft
- CThe approaching vessel is large and the bearing is changing appreciably
- DThe approaching vessel is forward of the beam and the range is constant
Why A is correct
33 CFR §83.07(d)(i) states that risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change. Bowditch Ch. 7 §704 confirms that constant bearing with decreasing range (CBDR) indicates collision risk.
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