🔍 Key Concepts

• Using the Stability Data Reference Book white pages for SS AMERICAN MARINER tank data • How to calculate the overall LCG-FP of several liquid loads: sum of moments divided by total weight • Difference between centerline (CL), port (P), starboard (S), and P/S tanks for longitudinal calculations

💭 Think About

• For each tank listed (DB and DT, plus dis/water), what two numbers do you need from the white pages to form a longitudinal moment? • Once you have the LCG for each tank from FP, how do you combine them to get a single LCG-FP for all liquids together? • How does adding or removing a small DIS/WATER quantity at a very forward or aft location affect the final combined LCG-FP?

✅ Before You Answer

• Be sure you are using the correct ship (SS AMERICAN MARINER) and the white-page tank tables, not the curves or another vessel • Check that each tank’s weight (tons) and LCG from FP (feet) are correctly copied before multiplying to get moments • Before choosing an answer, verify that the sum of individual moments ÷ total liquid weight gives a value that lies within the physical length of the ship and is consistent with which tanks are more heavily loaded (forward vs aft)