The COASTAL DRILLER is loaded as shown in...

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Question 1 of 2066636ef128f7522a1c52262b

The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). What is the new transverse free surface correction (FSCT) if the entire contents of drill water tanks 6 and 7 are discharged?

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Question 1 of 20

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🔍 Key Concepts

• Transverse free surface correction (FSCT) and how it changes when slack tanks are emptied • Using the Sample Load Form #1 (Rig Move) to identify which tanks contribute to FSCT • Difference between free surface moment (FSM) of each tank and the total displacement of the rig

💭 Think About

• When you discharge drill water from tanks 6 and 7, what happens to their individual free surface moments? Do they still contribute to FSCT? • How do you recompute the total FSCT after removing the contribution of some tanks? Think about the formula that combines total FSM and displacement. • Are there any changes to displacement when you pump drill water off, and how does that affect the FSCT value?

✅ Before You Answer

• From the Sample Load Form, identify the FSM values for drill water tanks 6 and 7 and confirm whether they are slack before discharge. • Recalculate the total FSM for all remaining slack tanks after tanks 6 and 7 are empty. • Verify that you’re using the correct formula: FSCT = Total FSM ÷ Displacement, with consistent units throughout.

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