Determine the first time after 1200 EST (ZD +5) when the velocity of the current will be 0.5 knot on 18 November 1983, at Marcus Hook, PA.
Official USCG Answer & Rule Citation
Correct Answer: Option C — 1239
Consult the Tidal Current Tables for the Delaware River. Identify the times of slack water and maximum flood/ebb. Interpolate the current velocity using the provided tables for the specific date and location. The velocity reaches 0.5 knots at 1239, following the standard harmonic analysis methods for tidal current predictions.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.