🔍 Key Concepts

• Tons Per Inch Immersion (TPI) or Tons Per Centimeter (TPC) from the hydrostatic data at 58.0 feet draft • Effect of discharging weight on draft (does the vessel go deeper or rise?) • Working in inches (or centimeters) of immersion, then converting back to feet for the final draft

💭 Think About

• From the hydrostatic table for DEEP DRILLER at 58.0 feet, what is the TPI/TPC, and how many inches (or centimeters) of draft change correspond to 200 long tons? • Since 200 long tons are removed, should you add or subtract the calculated draft change from 58.0 feet? • After finding the draft change in inches (or centimeters), what is the correct way to convert that to feet and match it to one of the choices?

✅ Before You Answer

• Confirm from the data table that you are using the correct TPI/TPC value at 58.0 feet draft in sea water • Be sure the sign of the draft change is correct: removing weight → draft decreases • Check your unit conversions: 12 inches = 1 foot (or 100 cm = 1 meter) so your final draft must be in feet before comparing to the options