USCG Exam Practice · GPS and electronic navigation
According to 33 CFR §164.11, which of the following is prohibited when fixing a vessel's position underway?
- AUsing electronic navigational equipment as one of several references
- BUsing geographic reference points to confirm position
- CUsing buoys as the sole means of fixing position✓ correct
- DUsing hydrographic contours in conjunction with other references
Why C is correct
33 CFR §164.11(e) explicitly states that buoys alone are not to be used to fix the vessel's position. The accompanying note clarifies that buoys are placed in approximate positions and may be displaced by currents, seas, ice, or vessel collisions. Buoys may corroborate a fix established by other means but cannot serve as the sole fixing reference.
Cited:33 CFR §164.11
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