The SS AMERICAN MARINER is ready to bunker...

Question 1 / 2066636eec28f7522a1c51cbfc

Question 1 of 2066636eec28f7522a1c51cbfc

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 20'-04", AFT 23'-06". After all bunkers are on board, soundings indicate the tonnages shown in table ST-0172 below. Use the white pages of The Stability Data Reference Book to determine the free surface correction.

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🔍 Key Concepts

• Use the white pages tank tables for the SS AMERICAN MARINER to find which tanks are slack and what their free surface moments (FSM) are at the given soundings (tons in each tank). • Remember that Free Surface Correction (FSC) is found by summing the FSMs of all slack tanks and dividing by the ship’s displacement at the final drafts. • Use the hydrostatic data for the final drafts (FWD 20'-04", AFT 23'-06") to obtain the ship’s displacement before applying the correction.

💭 Think About

• From the tank table, which of the listed tanks are completely full or empty (no free surface) and which are partially filled (slack) and therefore contribute to FSM? • Once you identify the slack tanks, how do you interpolate in the white pages to get the FSM corresponding to the exact tonnage in each tank? • After summing all FSMs, what hydrostatic value from the displacement/draft tables do you need, and how do you combine it with total FSM to convert the result into feet of GM correction?

✅ Before You Answer

• Verify which tanks are centerline (CL) versus port/starboard (P/S) and remember that both port and starboard slack tanks of the same pair each contribute their own FSM. • Double‑check that you are using FSM, not LCG or vertical moments, from the tank tables for each slack tank. • Confirm you are using the correct displacement at the final drafts (not lightweight or deadweight) when you divide total FSM to obtain the free surface correction in feet.

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Question 1 of 20

0.62 foot

0.80 foot

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0.99 foot

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Question 1 / 2066636eec28f7522a1c51cbfc

Question 1 of 2066636eec28f7522a1c51cbfc

Back

Question 1 of 20

66636eec28f7522a1c51cbfc

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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