Your vessel is damaged and listing to port. There is a short rolling period around the angle of list. The port side freeboard is reduced to 1 foot. There is no trim and the weather is calm. You should FIRST __________.
• Initial vs. ultimate stability when a vessel is listing and has a short rolling period • Effect of slack tanks and free surface on stability and angle of list • How adding or removing weight (and where) changes GM, freeboard, and angle of list
• Compare what each option does to the vessel’s center of gravity (G): does it move G up, down, to port, to starboard, or stay on the centerline? • Think about which single action would most quickly increase stability and safety when the vessel already has very low freeboard on the listed side. • Ask yourself which option might make the list or free surface effect worse, even if it sounds like you are correcting the list.
• Identify which options increase free surface effect and which reduce it. • Check which actions lower the center of gravity and whether they do so on the centerline or to one side. • Verify which action does not risk further reducing port freeboard when it is already only 1 foot.
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