The COASTAL DRILLER is loaded as shown in the Sample Load Form Number 1 (Rig Move). If the drill water in drill water tanks 6 and 25 are discharged, what is the new draft?

Correct Answer: Option B — 10.66 feet

Discharging drill water from tanks 6 and 25 reduces total displacement. Utilizing the hydrostatic curves and displacement table from the COASTAL DRILLER Operating Manual, the reduction in weight results in a new lighter mean draft of 10.66 feet.