A vessel has a mean draft of 28 feet 08...

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Question 1 of 205eccef9dbacbc34ba4d45e0b

A vessel has a mean draft of 28 feet 08 inches before taking bunkers. What will be the final aft draft after taking on nine hundred tons of fuel oil, if the TPI immersion is 50 and the final forward draft is 30 feet 00 inches?

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🔍 Key Concepts

• Mean draft vs. trim – how to find individual forward and aft drafts from a mean draft when trim changes • TPI (Tons per Inch immersion) – how many inches the ship will sink when weight is added, and how to convert that to a change in mean draft • Relationship between a change in mean draft and a change in trim when the final forward draft is known

💭 Think About

• First, convert the mean draft before bunkering into inches and compare it to the final mean draft after adding 900 tons using the TPI. How many inches does the mean draft increase? • Once you know the new mean draft, use the given final forward draft to figure out how much trim by the stern you must have to produce that mean draft. • From the mean draft and the trim, back out the aft draft. Ask: if mean draft is halfway between forward and aft, what aft draft would give that mean when the forward draft is fixed at 30 feet 00 inches?

✅ Before You Answer

• Be sure you convert feet and inches to total inches before doing any subtraction or averaging. • Confirm that the increase in mean draft from the added weight equals (weight added ÷ TPI) in inches. • Double-check that the mean draft = (forward draft + aft draft) ÷ 2 relationship is applied correctly when solving for the aft draft.

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