USCG Exam PracticeTides and currents — predictions and corrections
When using NOAA Tide Tables to obtain a prediction for a subordinate station, which procedure is correct?
- A. Average the predictions of the two nearest reference stations
- B. Use the subordinate station's data directly without reference to any other station
- ✓ Apply the tabulated time and height differences to the reference station predictionCorrect
- D. Apply the subordinate station corrections to the nearest tidal current reference station
Why C is correct
Bowditch Ch. 9 §905 states that predictions for a subordinate station are obtained by applying the tabulated time and height differences to its reference station. The tables also caution to verify the correct time zone and daylight time before applying the prediction.
Cited:Bowditch Ch. 9 §905