The DEEP DRILLER, at a draft of 60 feet, has...

Question 1 of 2707066636ee728f7522a1c517896

The DEEP DRILLER, at a draft of 60 feet, has 3,765 ft-tons of transverse moments. How much ballast should be transferred between tanks 1P and 1S to level the unit in list?

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Question 1 of 27070

The DEEP DRILLER, at a draft of 60 feet, has 3,765 ft-tons of transverse moments. How much ballast should be transferred between tanks 1P and 1S to level the unit in list?

🔍 Key Concepts

• Transverse moment is created when a weight is moved sideways (port to starboard) and is equal to weight × distance moved. • When you transfer ballast from 1P to 1S, the effective shift distance is from 1P across the centerline to 1S (often 2 × the distance from centerline). • The given 3,765 ft‑tons is the total correcting moment needed; the ballast you move must create that same magnitude of moment.

💭 Think About

• Think about what happens to the center of gravity when you move weight from port to starboard. How far does that weight effectively move? • Write the basic formula for a heeling/leveling moment from weight shift, then solve it for the unknown weight to be transferred. • Compare your computed weight with the choices; does it give a reasonable, not extreme, amount of ballast for a rig like DEEP DRILLER?

✅ Before You Answer

• Use the formula Moment = Weight × Distance moved and make sure units are ft‑tons (long tons × feet). • Be clear whether the distance in your formula is from one tank to the other, or just from the centerline to one tank — this changes the moment by a factor of 2. • After you find the required weight to move, check that it is in long tons, not metric tons or pounds, before matching to the choices.