Question 1882Navigation General

The correct answer is A) 000°. To determine the latitude of your vessel, you should observe a celestial body on a bearing of 000° (true north). This is because the altitude of a celestial body observed on the meridian (the north-south line passing through the observer) provides a direct measurement of the observer's latitude. The other options are incorrect because observing a celestial body on bearings other than 000° would not provide a direct measurement of your latitude. Observing on 138° or 318° would not be on the meridian, and 270° (west) would not be a suitable bearing for determining latitude.