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I would also add those barriers seem to depend on the ship staying intact during collision. Given the immense inertia involved on the bigger ships I could just as easily see a scenario where the barrier ends up ripping through the lower hull while the rest of the ship continues forward.

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> easily see a scenario where the barrier ends up ripping through the lower hull while the rest of the ship continues forward

I don’t think that is likely? My intuition is that in order to stay seaworthy ships are constructed with more integrity than that.

I don’t have any hard evidence though, just that I have looked at many ship collision/allision aftermath photos and what you describe is not a failure mode I have seen so far.