Question 18Navigation Problems

The correct answer is C) 0541. To determine the zone time of sunrise, we need to calculate the position of the sun relative to the vessel's location and time zone. Given the vessel's position at 0400 zone time, latitude 23°00'N and longitude 81°45'W, and the course and speed, we can calculate the position of the vessel at the time of sunrise. The sunrise time is calculated based on the vessel's geographic position and the sun's position, which varies with the time of day and location. Using standard navigation methods and tables, the zone time of sunrise for the vessel's position on June 22 is 0541. The other options are incorrect because they do not accurately reflect the sunrise time given the vessel's position and time zone.