USCG Exam Practice · Plotting with variation and deviation (T-V-M-D-C)
Which of the following is a correct statement regarding the use of buoys to fix the position of a towing vessel?
- ABuoys may corroborate a position fixed by other means but cannot by themselves fix a position✓ correct
- BBuoys are maintained in exact charted positions and may be used as the sole means of fixing position
- CBuoys may be used to fix position only when visibility exceeds one nautical mile
- DBuoys may be used to fix position provided at least three buoys are used simultaneously
Why A is correct
33 CFR §164.78(a)(3) states that buoys are placed in approximate positions and may not maintain exact charted positions. Although they may corroborate a position fixed by other means, they cannot fix a position; if no other aids are available, buoys alone may establish only an estimated position.
Cited:33 CFR §164.78
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