On 17 April your vessel is enroute from the Panama Canal to Kobe, Japan. Your 0400 zone time DR position is LAT 26°12.0'N, LONG 126°12.0'W. Your vessel is on course 285°T at a speed of 18 knots. What will be the zone time of sunrise at your vessel?

Correct Answer: Option B — 0602

Determine the vessel's position at the approximate time of sunrise by dead reckoning. Use the Nautical Almanac's sunrise tables, applying the latitude and longitude corrections. Adjusting for the vessel's westward movement relative to the sun's apparent motion results in a calculated zone time of 0602.