The SS AMERICAN MARINER has the following drafts: FWD 08'-11.5", AFT 15'- 11.5". Upon completion of loading and bunkering the items shown in table ST-0144 below will be on board. Use the white pages of The Stability Data Reference Book to determine the minimum GM required to meet a one compartment standard.
• Use the forward and after drafts to find the ship’s mean draft and then the corresponding displacement in the white pages tables for SS AMERICAN MARINER • For a given displacement, the Stability Data Reference Book has a “Minimum GM for One‑Compartment Standard” curve or table – you read GM directly from that for the correct condition • Make sure you are using the table/curve for the correct standard (one‑compartment) and the correct displacement range
• What is the mean draft for the given forward and after drafts, and which displacement (in tons) does that mean draft correspond to in the white pages for AMERICAN MARINER? • Once you have the displacement, where in the white pages do you find the minimum GM required for one‑compartment damage, and how do you interpolate if your exact displacement is between two listed values? • How do the listed weights (stores, lube oil, cargo, fuel oil, fresh water, ballast) affect which loading condition or displacement curve you should be using in the book?
• Confirm you are using the correct vessel (SS AMERICAN MARINER) pages and not a generic example page • Verify the mean draft and displacement are read or interpolated accurately before going to the GM requirement chart • Double‑check that the GM you read is for the one‑compartment standard, not for two‑compartment or any intact-stability curve
No comments yet
Be the first to share your thoughts!