USCG Exam PracticeApplying tide corrections to charted depth
Tide tables for a subordinate station are not listed directly. How are predictions for that station obtained?
- A. Use the nearest reference station predictions without adjustment.
- ✓ Apply the tabulated time and height differences to the reference station predictions.Correct
- C. Use the tidal current tables in place of tide height tables.
- D. Average the predictions of the two nearest reference stations.
Why B is correct
Bowditch Ch. 9 §905 states that predictions for a subordinate station are obtained by applying the tabulated time and height differences to the reference station. Using reference station values without correction would introduce error.
Cited:Bowditch Ch. 9 §905