While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers a sudden unexpected inclination to starboard and aft. Strong wind and high waves are on the port bow. Among the possible causes, you should consider _________________.

A
failure of mooring lines 5 or 6
B
failure of mooring lines 1 or 2
C
leak in ballast tank 9P
D
ballast tanks equalizing into tank 10S
E