USCG Exam PracticeGPS and electronic navigation
According to 33 CFR §164.11, which of the following is expressly prohibited when fixing a vessel's position underway?
- A. Using electronic navigational equipment as the sole positioning reference
- ✓ Using buoys as the sole means of fixing the vessel's positionCorrect
- C. Using hydrographic contours to corroborate a fix
- D. Using geographic reference points in conjunction with radar
Why B is correct
33 CFR §164.11(e) expressly states that buoys alone are not to be used to fix the vessel's position. The accompanying note explains that buoys are placed in approximate positions and may be displaced by currents, ice, or vessel collisions. Buoys may corroborate a fix established by other means but cannot serve as the sole basis for one.
Cited:33 CFR §164.11