USCG Exam PracticeTides and currents — predictions and corrections
When using NOAA Tide Tables to find the predicted tide at a subordinate station, the navigator must:
- A. Average the predictions from the two nearest reference stations
- ✓ Apply tabulated time and height differences to the predictions for the reference stationCorrect
- C. Use the subordinate station's data directly without reference to any other station
- D. Apply tabulated time and height differences to the predictions for the nearest subordinate station
Why B is correct
Predictions for a subordinate station are obtained by applying the tabulated time and height differences to the predictions of its designated reference station. The navigator must also verify the correct time zone and daylight time before applying the correction.
Cited:Bowditch Ch. 9 §905