On 27 March your 0330 zone time DR position is LAT 23°32'N, LONG 154°47'E. Your vessel is on a course of 105°T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?

Question

On 27 March your 0330 zone time DR position is LAT 23&deg;32'N, LONG 154&deg;47'E. Your vessel is on a course of 105&deg;T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?

Accepted Answer

Option A: 0534. Calculate the sunrise time by interpolating the values in the Nautical Almanac for the vessel's latitude. Adjust for the vessel's change in longitude during the interval between the DR time and the expected sunrise. The resulting calculation confirms 0534 as the zone time of sunrise.

On 27 March your 0330 zone time DR position is LAT 23&deg;32'N, LONG 154&deg;47'E. Your vessel is on a course of 105&deg;T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?

On 27 March your 0330 zone time DR position is LAT 23°32'N, LONG 154°47'E. Your vessel is on a course of 105°T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?