The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). What is the new longitudinal free surface correction (FSCL) if the entire contents of Salt Water Ballast Tanks 1P and 1S are discharged?
• Free surface correction (FSC) and how it is read or calculated from the Sample Load Form #1 (Transit) for the DEEP DRILLER • Effect on longitudinal FSC when you completely empty a pair of symmetric wing tanks (1P and 1S) that are partially full vs. pressed full • Relationship between location of the tank (fore or aft) and its moment contribution to longitudinal stability and trim
• On the Sample Load Form, where do you find the free surface correction components for each tank or group of tanks, and how is the total longitudinal FSCL obtained from them? • When 1P and 1S are discharged, what happens to their individual free surface moments and how does that change the sum used for FSCL? • Are 1P and 1S forward, midship, or aft, and how does removing their free surface moments numerically affect the total, compared with the original FSCL shown on the form?
• Identify the original FSCL value on Sample Load Form #1 before any changes. • Locate the free surface data (moment or correction) associated with Tanks 1P and 1S and determine the amount you are subtracting from the original FSCL. • After adjusting for the removal of 1P and 1S, confirm that your new FSCL matches one of the answer choices and that your units are feet, not inches or percent.
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