No cause info. Not in Cahill.
Alliance was hit in No 5 starboard, hole near deck, and hole 1 m below waterline.
OSCH has this spill at both 14,000B and 87,000B.
CEDRE has the same story, first a spill of 2000T
and then another 8000t after resuming trip.
Sounds like the 2000T was immediate run-off from the top hole,
and the second spill was the tank going to hydrostatic balance
from the lower hole.
With the top of the hole only 1 m below waterline,
ship would lose almost all the oil in the tank
unless they did something smart.
Amazing they allowed the ship to proceed.
No fire, was 1970 built ship inerted?
We have a picture of the HMS Achilles
being repaired in the dry dock.
Looks like the bow damage extended back about 5 m.
But given that the Alliance was holed only top and bottom,
the depth of penetration could not have been that much.
This may have been a rare case in which the hittee wins.
A strong double side might have prevented this spill.
Need cause, depth of penetration.