Question 54Navigation General

The correct answer is B) very quick flashing. Cardinal marks are navigation buoys that indicate the direction of the safe water in relation to the mark. A cardinal mark's characteristic light pattern is very quick flashing, with a flash rate of 60-99 flashes per minute. This distinct flashing pattern helps mariners identify the mark as a cardinal mark, in contrast to other buoy types that have different light characteristics like flashing, occulting, or fixed. The other answer choices are incorrect because flashing (A) is a different light characteristic, occulting (C) is also a different light pattern, and fixed (D) lights are not used for cardinal marks.