Deck General · Weight Shifts & List
Adding weight to a vessel BELOW the existing center of gravity (G) will:
- ARaise G, reduce GM, and make the ship more tender
- BLower G, increase GM, and make the ship more stiff✓ Correct
- CHave no effect on G because the weight is below the waterline
- DCause loll if the weight is near the bilge
Explanation
G moves toward any added weight. Adding weight below G pulls G downward, increasing the separation between G and M (GM increases). The vessel becomes stiffer with a shorter rolling period — more initial stability.
Authority: Stability & Trim (USCG deck topic)
Practice the full Deck General bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Deck General questions
- Weight Shifts & List
A weight of 10 tons is shifted 15 feet to starboard across a vessel displacing 1,000 tons. What is the listing moment produced?
- Weight Shifts & List
Deck cargo is loaded on the weather deck, raising G significantly. The most immediate effect on initial stability is:
- Weight Shifts & List
A vessel is listed 5 degrees to port due to an off-center load. To correct the list without adding or removing weight, you should:
- Weight Shifts & List
Removing a weight from a vessel causes G to move:
- Weight Shifts & List
A vessel is floating at an even keel. A 100-ton weight is shifted from the centerline to 10 feet to port. The vessel displaces 5,000 tons and has a GM of 2 feet. The list angle is approximately:
- Stability Definitions
Displacement is best defined as: