Missing Argentine submarine. (15 NOV 2017)

[Leadeye]

Is this something like "is Tom Clancy's 'Crazy Ivan' maneuver truth or fiction?"

I think that just meant turning around quickly to see what's behind you. I'm thinking of attitudes like steep pitches and rolls. Act will be along with a good answer.

 

[actaeon277]

The Crazy Ivan is a real thing.

We do practice "angles and dangles"
But there is a limit to how "vertical" you can go.
The machinery is not designed for it.
Also, think about the ballast tanks.
When you surface (or try to) you close the vents, and blow high pressure air into the ballast tanks, which forces the water out.
As you approach vertical, that air would escape the bottom of the tank. The bottom of the tank is open, with just grating across.

Take an empty cup. Turn it upside down. Push it into some water.
Air remains in the cup, trapped.
But if you rotate the cup 90 degrees, so that it is on it's side, the air escapes.

 

[actaeon277]

The missing Indonesian sub has now been declared "sunk".


Fair Winds, and Following Seas sailors.