The SS AMERICAN MARINER has the liquid load shown in table ST-0155 below. Use the white pages of The Stability Data Reference Book to determine the LCG-FP of the liquid load.
• Use the LCG (Longitudinal Center of Gravity) from FP listed for each tank in the white pages of the AMERICAN MARINER Stability Data Reference Book • Form the longitudinal moments for each tank: weight from ST-0155 × LCG from FP • Compute the combined LCG of the entire liquid load by dividing the sum of moments by the total liquid weight
• How do the weights in table ST-0155 relate to the LCG values you find in the white pages for the same tank names (DB 1 CL, DB 2 P, DT 4 P/S, etc.)? • Once you have a moment for each tank, what single formula lets you turn the sum of moments and sum of weights into one overall LCG-FP for the liquid load? • Are any of the listed tanks port and starboard pairs with the same LCG, and how does that simplify your work?
• Match each tank in ST-0155 exactly to the correct line in the white pages (watch for CL vs P/S and DB vs DT) • Verify you have included all tanks and the DIS/WATER entry in both the total weight and total moment • After computing the overall LCG-FP, check that the result falls between the smallest and largest individual tank LCGs you used
No comments yet
Be the first to share your thoughts!