The SS AMERICAN MARINER arrived in port with...

Study

Question 1 of 2066636eec28f7522a1c51cb64

The SS AMERICAN MARINER arrived in port with drafts of: FWD 21'-06.5", AFT 23'-05.4". Cargo was loaded and discharged as indicated in table ST-0072 below. Use sheet 2 in the white pages of The Stability Data Reference Book to determine the final drafts.

NMC has NOT supplied the weights to load or discharge for this question.

Back

Question 1 of 20

66636eec28f7522a1c51cb64

NMC has NOT supplied the weights to load or discharge for this question.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Use sheet 2 – Hydrostatic Data for SS AMERICAN MARINER from the Stability Data Reference Book to get TPI (tons per inch immersion), LCF (longitudinal center of flotation), and MT1" (moment to trim 1 inch) for the starting mean draft. • Convert each load/discharge into a trimming moment using the distance from amidships (LCB/LCF reference) and the sign convention: loads forward vs aft and discharges forward vs aft. • Relate total buoyancy change (change of displacement) to the change in mean draft, then relate total trimming moment to the change in trim, and finally split trim into changes at the FWD and AFT drafts.

💭 Think About

• From the initial drafts, what is the initial mean draft and which line on sheet 2 is closest to that mean draft for reading TPI and MT1"? • For each line in the cargo table, is the moment bow-down or stern-down? How do the signs of load vs discharge and forward vs aft combine to give the correct trimming moment sign? • After you find the change in mean draft and the change in trim, how do you apply ½ of the trim change to the forward draft and ½ (in the opposite sense) to the aft draft starting from the new mean draft?

✅ Before You Answer

• Compute the net weight change (total loaded minus total discharged) and be sure its sign matches whether the final mean draft should be deeper or lighter. • Compute the algebraic sum of trimming moments about amidships; verify units are ft-tons, then convert to inches of trim using MT1" from sheet 2. • Before picking an answer, recompute the final forward and aft drafts: initial drafts ± change in mean draft ± trim components, and make sure that the difference between forward and aft drafts equals your calculated total trim.

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed

Study

Question 1 of 2066636eec28f7522a1c51cb64

NMC has NOT supplied the weights to load or discharge for this question.

Back

Question 1 of 20

66636eec28f7522a1c51cb64

NMC has NOT supplied the weights to load or discharge for this question.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed