Question 1875Navigation General

The correct answer is B) 201°. To check the speed of your vessel, you should observe a celestial body on the same bearing as your course, which is 201°T. This is because by observing a celestial body on the same bearing as your course, you can accurately measure the rate of change in the body's azimuth, which is directly related to your vessel's speed over the ground. The other options are incorrect because observing a celestial body on a bearing that is not the same as your course would not provide an accurate speed measurement. For example, observing a body at 180°, 111°, or 90° would not directly relate to your vessel's speed on a 201°T course.