ITOPF has the spill at 16,000 tons "white products",
which is the number CTX is using.
It would be nice to have some confirmation
of the submerged object striking.
However, for now CTX is reluctantly accepting this story.
Ship was almost certainly not inerted,
but we need confirmation.
According to the usually reliable Miramar Ship Index,
the ship was repaired and called the Titipor.
ETC and some derivative sources have two spills in Oct 1979,
in nearly the same location, one for the Gunvor Maersk,
and one under the name Titipor (no day, just month).
CTX is assuming that these are the same spill.