🔍 Key Concepts

• Ullage vs. sounding and how they relate to the actual quantity of cement in a tank • How to use the P-tank #1 capacity table (on the DEEP DRILLER data sheet) to find weight and vertical center of gravity (VCG) for a given ullage • How to compute a vertical moment from tank weight and VCG

💭 Think About

• From an ullage of 2.3 feet, what is the corresponding actual cement level or volume in P-tank #1 according to the DEEP DRILLER tank table? • Once you know the weight of cement in the tank and the VCG from the data sheet, how do you combine those two numbers to get a vertical moment? • Check whether you are using the correct reference point for the VCG (e.g., above baseline). How does this affect the moment calculation?

✅ Before You Answer

• Confirm that you are reading the correct P-tank #1 column/row on the DEEP DRILLER tank capacity table for cement, not for another cargo or a different tank. • Verify that you correctly converted ullage to level/volume/weight using the table (no confusion between sounding and ullage). • Double-check the calculation: Vertical moment = weight × vertical distance (VCG), and ensure your units give a result in ft-tons.