🔍 Key Concepts
• Use the forward and aft drafts to find the ship’s mean draft and trim in the SS AMERICAN MARINER Stability Data Reference Book (white pages).
• From that mean draft, read the corresponding displacement and then go to the One‑Compartment Standard / Required GM table for that displacement range.
• Understand that the list of weights (stores, fuel, cargo, ballast, etc.) describes the loading condition, but the minimum GM is taken directly from the damage stability (required GM) tables, not calculated from the weights.
💭 Think About
• How do you combine the 09'-00" forward draft and 15'-11" aft draft to get the mean draft, and why is that the key to choosing the correct hydrostatic page?
• Once you know the displacement from the hydrostatic data, which table in the white pages tells you the minimum GM for the one‑compartment standard, and do you need to interpolate between two displacements?
• Do any of the answer choices suggest that a small change in assumed displacement (or rounding) might shift the required GM slightly, and how would careful interpolation help you decide between close values?
✅ Before You Answer
• Be sure you are on the correct hydrostatic page for the SS AMERICAN MARINER and are using the draft aft, forward, and mean exactly as shown in the question.
• Verify that the displacement you read or interpolate from the hydrostatic table matches the loading condition range used by the One‑Compartment Standard / Min. GM tables.
• Double‑check whether the table value lies between two listed displacements; if so, perform a linear interpolation before comparing to the answer choices.