The SS AMERICAN MARINER is ready to bunker...

Question 1 / 2066636eec28f7522a1c51cbfb

Question 1 of 2066636eec28f7522a1c51cbfb

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 21'-04", AFT 26'-04". After all bunkers are on board, soundings indicate the tonnages shown in table ST-0170 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 initial drafts to enter the hydrostatic tables in the white pages and find the ship’s displacement at the time of bunkering. • From the tank soundings/tonnages table, decide which tanks are slack (partly filled) and for each of those tanks obtain its Free Surface Moment / Constant (FSM/FSC) from the Stability Data Reference Book. • The total free surface correction (FSC) to GM is found by combining all slack tanks’ free-surface effects and then dividing by the ship’s displacement.

💭 Think About

• Looking at the listed tonnages, which tanks are clearly not empty and not pressed full, and therefore must be treated as slack for free surface purposes? • Once you locate the free-surface data for each slack tank, how do you combine them into a single value before applying it to the ship—are you adding weights or adding moments? • After you obtain the sum of free-surface moments, what role does the ship’s displacement (from the draft-based hydrostatic data) play in turning that sum into a GM correction in feet?

✅ Before You Answer

• Be sure you are only including slack tanks in the free-surface calculation; do not count tanks that are either empty or pressed full. • Confirm you are using the correct free-surface table (right tank, correct fluid type and density) from the white pages—double-check port/starboard vs centerline tanks. • After summing the free-surface moments, verify that you divide by the correct displacement at the stated drafts, and that your final correction is in feet, matching the answer choices.

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Question 1 of 20

0.54 ft

0.62 ft

0.80 ft

0.85 ft

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Question 1 / 2066636eec28f7522a1c51cbfb

Question 1 of 2066636eec28f7522a1c51cbfb

Back

Question 1 of 20

66636eec28f7522a1c51cbfb

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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