ORIGINAL: oztruck
Could it have been the ''Atlantic Conveyor''?
Scuttled....
Atlantic Conveyor was hit by two[2] Exocet missiles fired by a pair of Argentine Super Étendard jet fighters.
The ship caught fire, the fire then became uncontrollable. When the fire had burnt out, the ship was boarded but
nothing was recoverable and so the decision was made to sink her.
.
Both boats definitely served as grey boats, but I can't find any service records for them.