单项选择题 Besides saving distance along the track line，another advantage of the Scharnow Turn over the Williamson Turn in a man overboard situation because（）.

单项选择题 At night，a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two（）.

单项选择题 As a vessel falls off the wind from close-hauled to a beam reach，the tendency for the vessel to move sideways through the water will（）.