One of the types of problems you may have on a Coast Guard exam for deck licenses is the estimated time of arrival (ETA) problem. These problems can be solved with a knowledge of the basic time, speed, and distance formula from piloting. The following information is given in these types of problems:
1. The name and or latitude and longitude of the place departing from. (When coordinates are not given the zone description is provided.)
2. The name and or latitude and longitude of the place the ship is going to. (When coordinates are not given the zone description is provided.)
3. The distance between the two points.
4. The ships speed of advance.
5. The length of any delays enroute such as bunkering.
With this information, the estimated time of arrival at the second port can be calculated by local zone time and date. The example problem will give you a idea on how to solve these problems.
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