🔍 Key Concepts

• Use the white pages for SS AMERICAN MARINER to get the ship’s Displacement vs. KM for the final loaded condition • Compute the final KG from the load list by finding total moments (W × KG) and dividing by total weight • Apply the free surface correction (FSC) using the given total free surface moments to find the available GM = KM − KG − FSC

💭 Think About

• Which page in the Stability Data Reference Book tells you the lightship displacement and KG for AMERICAN MARINER, and how do you combine that with the load items in ST-0149? • After you get the final displacement from lightship + all loads, where do you read the corresponding KM value, and how do you adjust it for free surface moments? • Once you calculate GM before free surface, how does subtracting the free surface correction change your answer toward one of the choices?

✅ Before You Answer

• Be sure you included lightship weight and KG as well as every load item (including deck cargo) in your KG calculation • Verify that free surface correction is computed as FSC = (Total Free Surface Moment) ÷ (Displacement) using consistent units (long tons throughout) • Double‑check that the KM you use comes from the correct displacement row in the ship’s hydrostatic data, not from a different draft or loading condition