The SN entry is taken from Hooke.
Algerian crude is very volatile.
12 years after Mactra et al,
very likely no IGS, no closed ullaging system.
Not required by IMO until 1984.
According to Rempec, the hoses were still connected.
There's a good chance ullage lids were open
for post-discharge cargo survey.
Sounds like repeat of Seatiger, similar to Chevron Hawaii.
Did the Italians or Japanese do a report?