Nah, I'll just watch Iron Lung, thanks.

Thanks, I hate it

James Earl Jones

:(

After some thought, I've decided that we should refer to this apparent lapse by journalists as "Oceangate-gate-gate"

To be fair, at the exact moment he said "All good here" it probably was. It just became very ungood, very quickly.

Explosive decompression is almost instantaneous at that depth. They wouldn't have had a chance to even blink.

I assume that the submarine producer gives stats like empty weight from which the current weight can be calculated.

However, weight isn't the important thing in a sub. It's the weight to volume ratio, or buoyancy.

A sub sinks when buoyancy is negative and rises if the buoyancy is positive.

There are three common ways to achieve the changing buoyancy: the most simple one is a vessel with positive buoyancy adding droppable weights until the buoyancy is negative.

Other ways are a neutral buoyancy vessel that uses it's engine power to push itself up or down. Or a vessel that can change it's buoyancy by filling up tanks with water (to reduce buoyancy below neutral) and blow them out with air or other gases lighter than water (to raise buoyancy above neutral). A combination of several methods is also possible.

Actually this is the opposite of explosive decompression.

When a car crashes head first into a brick wall, the rear bumper is usually salvageable.

I think the rear portion was more solid, so just not as many hollow portions to collapse.