USCG Exam PracticeCompass variation and deviation; T-V-M-D-C
Under 33 CFR §164.78, a person directing and controlling the movement of a towing vessel is required to know and apply variation and deviation under which condition?
- A. At all times, regardless of compass type or chart detail
- B. Only when operating seaward of the baseline of the territorial sea
- ✓ Where a magnetic compass is fitted and where charts have enough detail to enable this type of correctionCorrect
- D. Only when the gyrocompass is inoperative
Why C is correct
33 CFR §164.78(a)(5) states the operator shall know and apply variation and deviation 'where a magnetic compass is fitted and where charts or maps have enough detail to enable this type of correction.' The regulation does not limit this to offshore operations or gyrocompass failure.
Cited:33 CFR §164.78