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- Q516 - Engineering Safety & Environmental Protection
278. The motion of a vessel impacts its stability. Which of these motions shown in the illustration affects the governing «motion ahead and astern» stability
Surge is the vessel's forward and backward motion along its length, directly governing 'motion ahead and astern' stability. Surge is linear motion along the longitudinal axis, unlike heave (vertical), pitch and yaw (rotational), and sway (athwartships).
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