Find the height of the tide at Port Wentworth, GA, on 5 October 1983, at 1840 DST (ZD +4).

Correct Answer: Option D — 4.4 feet

Using the NOAA Tide Tables and Bowditch methods, apply time and height differences for Port Wentworth. Calculate the duration from the nearest high/low tide and use the tidal curve/table to interpolate intermediate height for 1840 DST, yielding 4.4 feet.