Question 1959Navigation General

The correct answer is C) add one hour to the times listed for the reference stations. When daylight saving time is in effect, the times of tide and current calculations need to be adjusted by adding one hour to the times listed for the reference stations. This is because the reference station times are given in standard time, but during daylight saving time, the actual local time is one hour ahead of the standard time. Adding one hour to the reference station times will correctly reflect the local time under daylight saving conditions. The other options are incorrect because subtracting one hour (A) would make the times too early, applying no correction (B) would make the times one hour off, and adding 15 degrees to the standard meridian (D) is not the appropriate adjustment for daylight saving time.