You are to sail from Elizabethport, NJ, on 22 May 1983 with a maximum draft of 28 feet. You will pass over an obstruction in the channel near Sandy Hook that has a charted depth of 27 feet. The steaming time from Elizabethport to the obstruction is 1h 40m. What is the earliest time (ZD +4) you can sail on the afternoon of 22 May and pass over the obstruction with 3 feet of clearance?

Question

Accepted Answer

Option A: 1407. Tidal height required equals maximum draft plus required clearance minus charted depth (28' + 3' - 27' = 4'). Using the Tide Tables, determine the time the tide reaches +4.0 feet, then subtract the 1h 40m steaming time to find the earliest departure.