MV Estonia: separate the official findings from conjecture

What does the later hull damage mean for explanations of the MV Estonia disaster?

It justifies a fresh investigation, but it does not by itself prove a submarine collision or overturn the bow-door account; alternative flooding sequences remain conjectural.

The official account says the bow visor separated, the vehicle deck flooded, power failed, and evacuation and rescue were delayed. Later underwater filming revealed a four-metre hull opening, raising the possibility that earlier flooding contributed to the list and rapid final loss. That sequence remains conjectural, and the hole does not prove a submarine collision. A later follow-up argues that an internal explosion should have produced a conspicuous sound, whereas a collision might have been mistaken for a wave, but this is another tentative comparison rather than proof. New physical evidence warrants renewed investigation, while responsibility should not be assigned to an entire crew without a well-supported causal account.