What is the velocity of the tidal current at the east end of Pollock Rip Channel at 1700 DST (ZD +4) on 23 July 1983?

Correct Answer: Option C — 1.5 knots flooding

Pollock Rip Channel current predictions necessitate referencing Nantucket Sound harmonic tables, incorporating daylight saving time, and applying rate factors. Interpolating for 1700 DST on the given date calculates a flooding tidal current velocity of 1.5 knots.