The COASTAL DRILLER is loaded as shown in the Sample Load Form Number 1 (Rig Move). If the contents of 6 and 7 drill water tanks are discharged, what would be the new VCG?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 49.16 feet
Rig stability calculations require taking the initial vertical moments, subtracting the moments of discharged tanks 6 and 7, and dividing by the new reduced displacement in accordance with standard MODU weight and vertical center of gravity determination procedures.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.