The SS AMERICAN MARINER is ready to load the cargo listed in table ST-0050 below. There is already 2865 tons of cargo on board with a KG of 27.8 feet. Use the white pages of the Stability Data Reference Book to determine the final KG of all the cargo after loading is completed.
• Use the combined KG formula: total moments divided by total weight for all cargo (existing + new) • From the white pages of the Stability Data Reference Book, find the KG for each hold and deck level listed in the table (e.g., No. 3 Tank Top, No. 4 Second Deck, etc.) • Remember that the existing cargo (2865 tons at KG 27.8 ft) contributes a single weight and moment to your total
• After finding each location’s KG from the book, how do you turn each weight into a vertical moment, and how do you combine all those moments? • Is the average KG of the new cargo higher or lower than 27.8 ft? Based on that, should the final cargo KG end up above or below 27.8 ft? • Once you compute the total weight of all cargo, which answer choice is consistent with your calculated combined KG (moment/weight)?
• Add up all new cargo weights from the illustration and then add 2865 tons to get total cargo weight • For each stowage location, multiply weight × KG from the white pages to get its moment; don’t forget the existing cargo’s moment (2865 × 27.8) • After summing all moments, divide by total cargo weight and make sure the result is physically reasonable (slightly higher or lower than 27.8 ft based on where you loaded)
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