USCG Exam PracticeGPS and electronic navigation
According to 33 CFR §164.11, which of the following is prohibited when fixing a vessel's position underway?
- A. Using electronic navigational equipment as one of several position-fixing references
- ✓ Using buoys as the sole means of fixing the vessel's positionCorrect
- C. Using hydrographic contours to corroborate a position
- D. Using geographic reference points in conjunction with radar
Why B is correct
33 CFR §164.11(e) expressly prohibits using buoys alone 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 themselves constitute the fix.
Cited:33 CFR §164.11