Question 596Navigation General

The correct answer is B) 135.0°. A vessel heading southeast is on a course of 135.0°. This is because southeast is one of the four cardinal directions, which are defined as 45° increments on a compass. Specifically, southeast is the direction between south (180.0°) and east (90.0°), which is 135.0°. The other answer choices are incorrect because: A) 180.0° is south, not southeast; C) 157.5° is not a standard compass direction; and D) 112.5° is northeast, not southeast.