It apparently had dissolving straps on a ballast so it would (almost) surface on its own in case of issues.
If it wasn’t an explosive event they would have been stuck just under the surface with no way to get out. That said, opening a hatch in that scenario would be an absolute last resort anyways. It’s not like the people that went overboard on the Titanic lasted long and it’s in the same exact place.
If it wasn’t an explosive event they would have been stuck just under the surface with no way to get out. That said, opening a hatch in that scenario would be an absolute last resort anyways. It’s not like the people that went overboard on the Titanic lasted long and it’s in the same exact place.