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@Peternimmo the accident report is available online, and the loss is pretty convincingly explained.
There's passenger video of the ice field, it rammed into a "wall of ice" without slowing down - maybe don't try that in future - and the speed of sinking implies the damage was far worse than the "fist-sized hole" originally reported.
The expert above was interviewed before the facts came out, I've just been unfair!