Question 1961Navigation General

70% to pass

When daylight savings time is kept the times of tide and current calculations must be adjusted. One way of doing this is to _______________.

A subtract one hour from the times listed under the reference stations
B add 15° to the standard meridian when calculating the time difference
C add one hour to the times listed under the reference stations
D apply no correction, as the times in the reference stations are adjusted for daylight savings time
AI Explanation

The correct answer is C) add one hour to the times listed under the reference stations. During daylight saving time, the tidal and current predictions published in reference stations are based on standard time. To adjust these predictions for daylight saving time, you need to add one hour to the listed times. This is because daylight saving time shifts the clock forward by one hour, so the actual time of the tide or current will be one hour later than the published reference time. The other options are incorrect because subtracting an hour (A) or applying no correction (D) would result in the tide/current times being off by one hour. Option B of adding 15 degrees to the standard meridian is not the appropriate adjustment for daylight saving time.

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