USCG Exam Practice · Twin-screw vessel handling
Under 33 CFR §164.11, which of the following is expressly prohibited when fixing a vessel's position underway?
- AUsing hydrographic contours as a reference
- BUsing electronic navigational equipment
- CUsing buoys as the sole means of fixing position✓ correct
- DUsing geographic reference points
Why C is correct
33 CFR §164.11(e) states that buoys alone are not used to fix the vessel's position. The regulation's note further explains that buoys are placed in approximate positions and may not maintain exact position due to currents, seas, ice, or vessel collisions.
Cited:33 CFR §164.11
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