[PghBaldy]

Wouldn’t the pressure crush the aircraft?

[xone]

The plane is full of water, the pressure is equalized.

[Uncle Chip]

I don’t think so — the water would be seeping in as it sinks thus equalizing the pressure inside with the outside.

I’m just imagining all those floatable cushions in the fuselage wanting to get out and come up to the surface and unable to do so because they are trapped between the
water inside the compartment and the roof.

But who knows —