The maximum draft of the SS AMERICAN MARINER...

Question 1 / 2066636eec28f7522a1c51c6d7

Question 1 of 2066636eec28f7522a1c51c6d7

The maximum draft of the SS AMERICAN MARINER cannot exceed 30'-01" in order to cross a bar. The present drafts are: FWD 29'-04", AFT 30'-06". Use the white pages of the Stability Data Reference Book to determine the minimum amount of sea water to ballast the forepeak to achieve this condition.

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🔍 Key Concepts

• Maximum allowable draft at the aft perpendicular and how trim affects it • How ballasting the forepeak changes forward and aft drafts (trimming by the bow) • Using the white pages trim/MT1" data for SS AMERICAN MARINER (Moment to Change Trim 1 inch)

💭 Think About

• First, figure out how many inches the aft draft must be reduced to meet the 30'-01" limit, and how that relates to the change at the bow when trimming by the bow. • Identify the correct MT1" (Moment to Change Trim 1 inch) and the distance from LCF to the forepeak, then relate weight × distance to change in trim. • After finding the required change in trim, compute the weight of ballast needed and see which choice is just enough to bring the aft draft to (but not below) the limit.

✅ Before You Answer

• Be sure you are using the correct displacement and MT1" for the vessel’s present draft condition from the white pages. • Convert all drafts and trim changes fully into inches before using trim formulas. • Confirm that your final aft draft after trimming does not exceed 30'-01" and that you’ve used the minimum ballast weight that achieves this.

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Question 1 / 2066636eec28f7522a1c51c6d7

Question 1 of 2066636eec28f7522a1c51c6d7

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Question 1 of 20

66636eec28f7522a1c51c6d7

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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