The SS AMERICAN MARINER arrived in port with...

Question 1 / 2066636eec28f7522a1c51cb63

Question 1 of 2066636eec28f7522a1c51cb63

Load 90 tons--210 ft fwd of amidships Discharge 240 tons--38 ft fwd of amidships Discharge 120 tons--94 ft aft of amidships Load 140 tons--150 ft aft of amidships

Back

Question 1 of 20

66636eec28f7522a1c51cb63

Load 90 tons--210 ft fwd of amidships Discharge 240 tons--38 ft fwd of amidships Discharge 120 tons--94 ft aft of amidships Load 140 tons--150 ft aft of amidships

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 to get the vessel’s displacement, TPI (tons per inch immersion), and MCT 1" at the initial mean draft based on the given forward and aft drafts. • Compute the net weight change (total load minus total discharge) and use TPI to find the change in mean draft before you deal with trim. • Use the trimming moment method: trimming moment = Σ(w × distance from LCF), then trim (in inches) = trimming moment ÷ MCT 1". Split that trim between forward and aft drafts using the lever arms to the perpendiculars.

💭 Think About

• First, what is the vessel’s initial mean draft, and which line on Sheet 2 corresponds to that draft so you can read off displacement, TPI, and MCT 1"? • After you compute the net change in displacement from the loading/discharging table, how does that change the mean draft, and in which direction (deeper or lighter)? • When you form w × d moments, are you measuring each weight’s distance from LCF or from amidships, and how do you convert from one to the other using the data on Sheet 2?

✅ Before You Answer

• Be sure you have all drafts and distances in consistent units (convert feet and inches to decimal feet or inches before doing moments). • Confirm the sign of each moment: loads forward of LCF cause trim by the bow; loads aft of LCF cause trim by the stern (and discharges have the opposite effect). • After applying both the mean-draft change and the trim corrections, re-check that the difference between final forward and aft drafts matches the total trim you calculated and that one of the choices matches both numbers.

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

Quick actions

— No credit card needed

Question 1 of 20

The SS AMERICAN MARINER arrived in port with drafts of: FWD 19'-10.5", AFT 22'-11.6". Cargo was loaded and discharged as indicated in table ST-0154 below. Use sheet 2 in the white pages of The Stability Data Reference Book to determine the final drafts. Load 90 tons--210 ft fwd of amidships Discharge 240 tons--38 ft fwd of amidships Discharge 120 tons--94 ft aft of amidships Load 140 tons--150 ft aft of amidships

FWD 19'-11.7", AFT 23'-02.5"

FWD 19'-09.3", AFT 22'-08.7"

FWD 19'-07.6", AFT 22'-10.4"

FWD 20'-01.4", AFT 23'-00.6"

Question 1 / 2066636eec28f7522a1c51cb63

Question 1 of 2066636eec28f7522a1c51cb63

Load 90 tons--210 ft fwd of amidships Discharge 240 tons--38 ft fwd of amidships Discharge 120 tons--94 ft aft of amidships Load 140 tons--150 ft aft of amidships

Back

Question 1 of 20

66636eec28f7522a1c51cb63

Load 90 tons--210 ft fwd of amidships Discharge 240 tons--38 ft fwd of amidships Discharge 120 tons--94 ft aft of amidships Load 140 tons--150 ft aft of amidships

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