USCG Exam PracticeTides and currents — predictions and corrections
Under 33 CFR §164.78, a person directing and controlling the movement of a towing vessel is required to know which of the following regarding current?
- A. The speed of the current only, since direction can be inferred from chart contours
- ✓ The set, drift, tidal state, and speed and direction of the current for the area to be transitedCorrect
- C. The tidal state only, because set and drift are derived from GPS track data
- D. The direction of the current only, because drift is accounted for in the voyage plan
Why B is correct
33 CFR §164.78(a)(6) requires the person directing the towing vessel to know the speed and direction of the current, and the set, drift, and tidal state for the area to be transited. No element of this requirement may be omitted.
Cited:33 CFR §164.78