🔍 Key Concepts

• Relationship between displacement and draft – when weight is removed, what happens to draft? • How to use TPI/TPC (tons per inch/centimeter immersion) at a given draft to find a change in draft. • Why you should use the TPI value at or near 58.0 feet draft from the hydrostatic data for DEEP DRILLER.

💭 Think About

• First, decide whether the draft will increase or decrease when 1,792.44 long tons of ballast is discharged. • Using the TPI (or TPC) at 58.0 feet, compute the change in draft: tons removed ÷ TPI = inches (or centimeters) of draft change. • Convert the draft change to feet and apply it to the original 58.0 feet to get the new draft, then compare with the options.

✅ Before You Answer

• Make sure you are using the correct TPI/TPC value for DEEP DRILLER at about 58.0 feet, not a generic number. • Check that you subtract or add the draft change in the correct direction based on whether weight is being added or removed. • Confirm that your unit conversions (inches ↔ feet, or centimeters ↔ meters) are correct before matching your result to the closest choice.