🔍 Key Concepts

• Use the white pages hydrostatic data for SS AMERICAN MARINER to get displacement and KM for the loaded draft that matches this deadweight condition. • Compute the combined vertical center of gravity (KG) of all added weights by using moments: tons × KG, then add to lightship KG from the book. • Apply the free surface correction (FSC) using the given total free surface moments and the ship’s displacement, then find available GM = KM − (KG + FSC).

💭 Think About

• First, what total deadweight (sum of all listed tons) do you get, and when you add that to lightship displacement in the book, which displacement/ draft column in the hydrostatic tables does it match best? • After you find the new combined KG from lightship plus all weights, how does adding free surface moments change the effective KG (does it go up or down, and why)? • Once you have KM from the tables and the corrected KG (including free surface), which choice best matches KM − KG? Are any options clearly too small or too large compared with your intermediate values?

✅ Before You Answer

• Be sure you are using moments about the keel (K), not about the centerline or another reference, and keep units consistent (ft-tons). • Verify that the total displacement you use for free surface correction is the same displacement used to obtain KM from the tables. • Double‑check that you add the free surface correction to KG (raising it) rather than subtracting it, before computing GM.