Question 282Safety & Environmental - 1st Asst/Chief70% to pass
The motion of a vessel impacts its stability. Which of these motions shown in the illustration affects the governing "motion ahead and astern" stability? Illustration SF-0048
AI Explanation
The correct answer is D) Surge.
Surge is the motion of a vessel along its longitudinal (fore-and-aft) axis, which affects the vessel's stability in the "motion ahead and astern" direction. This motion impacts the vessel's stability in the direction of travel, which is a key factor in the "motion ahead and astern" stability considered in the US Coast Guard Captain's License Examinations.
The other options, heave (vertical motion), pitch (rotational motion about the transverse axis), and yaw (rotational motion about the vertical axis), do not directly affect the "motion ahead and astern" stability, which is the focus of the question.
Related Questions
#280 The motion of a vessel impacts its stability. Which of these motions shown in the illustration affects the governing "transverse" stability? Illustration SF-0048 #281 Pitching is the rising and falling motion of the bow of a ship oscillating about which axis? #283 The difference between the starboard and port drafts caused by a transverse shift in weight is called _______________.#284 If a vessel initially has no list and no significant trim, which of the developments shown in the illustration will result in the greatest list? Illustration SF-0025 #285 While serving as Chief Engineer on a partially loaded container ship the vessel is involved in a collision. An empty starboard side wing tank becomes open to the sea and the ship takes a starboard list. After investigating the damage it is found that no other adjoining tanks are open to the sea. What action should be recommended to ensure the ship maintains an even keel position?