Your vessel is damaged, and there is no list...

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Question 1 of 2066636eec28f7522a1c51d0cb

Your vessel is damaged, and there is no list or trim. The rolling period is short. The freeboard before the damage was 12'02" (3.7 meters). It is now reduced to 3'00" (1 meter). Which action would you take FIRST?

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Question 1 of 20

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🔍 Key Concepts

• Transverse stability and GM (metacentric height) as indicated by a vessel’s rolling period • Effect of changing ballast in centerline vs. wing (side) tanks on list and stability • How freeboard and reserve buoyancy influence what you should do first after damage

💭 Think About

• What does a short rolling period tell you about the ship’s stability and GM? In this situation, is your main problem stiffness or loss of reserve buoyancy (freeboard)? • Which option will most quickly improve the ship’s safety (especially freeboard) without creating a list or large free surface effect? • How do centerline tanks versus side tanks affect list, and how do slack tanks affect free-surface and GM?

✅ Before You Answer

• Identify which choices involve centerline tanks only and which involve off‑center (side) tanks that could create a list. • Check which options would increase free surface (slack tanks) versus eliminate it (pressed up or empty). • Decide which action will raise the ship in the water (increase freeboard) immediately while keeping trim and list close to zero.

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