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 ________________.

A
failure of mooring lines 3 or 4
B
failure of mooring lines 7 or 8
C
leak in ballast tank #2S
D
ballast tanks equalizing into tank 1S
E