@con77 It seems like it would be extremely simple to set up a compact airbag system on a ship that would essentially make it impossible to sink even with a massive hull breach. It seems like this could be done easily on small boats to large ships and everything in between. Any ideas why something like this isn't being used? I would have a hard time believing I'm the first person to think of this. They even use large inflatable air bags to raise sunken ships.