Question 1671Navigation General

The correct answer is D) 67°30'W. The reasoning is based on the concept of time zones, which are defined by longitude lines. Each time zone covers 15 degrees of longitude, and the clocks are changed by 1 hour for every 15 degrees of longitude traveled east or west. Since the ship is currently at 54°00'W and on a true course of 270°, it is moving westward. To maintain the proper time zone, the clocks should be changed when the ship reaches the next time zone boundary, which is 67°30'W (15 degrees west of the current position). The other options are incorrect because they do not correspond to the appropriate time zone boundary for the ship's current position and direction of travel.