Question 1873Navigation General

The correct answer is B) 132°. To check the course of a vessel on a heading of 042°T, you should observe a celestial body on a bearing of 132°. This is because the bearing of a celestial body is 90° to the right of the vessel's course. So, if the vessel is on a course of 042°T, the bearing of the celestial body should be 042° + 90° = 132°. The other options are incorrect because A) 090° is 90° to the left of the course, C) 180° is directly opposite the course, and D) 222° is 180° from the correct bearing.