Could easily have been a VLCC (DH) Braer.
It seems that the definition of a freak wave
is any wave that causes damage.
This ship was also involved in another machinery failure on 1997-08-10, loaded Monstad to Pt Tupper,
Experienced main engine cooling failure 60 miles WSW of Shetland 10 Aug 1997.
Repairs effected and continued on voyage.
and earlier loaded from Juaymah to Rotterdam 1994-10-12
Stopped in 50 21 N 02 31 W 12 Oct 1994 to repair defective valve in engine-room.
Proceeded on voyage in less than an hour.