While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers a sudden unexpected inclination to starboard and forward. Strong winds and high waves are from the port quarter. Among the possible causes, you should consider __________.

Correct Answer: Option A — failure of mooring lines 7 or 8

Environmental forces acting on the port quarter matched with a starboard-forward inclination point directly to the failure of downstream or weather-facing mooring lines 7 or 8, altering the station-keeping equilibrium and causing asymmetric vessel displacement.