Power of the machine gun?

[CaliEs]

3.6 bathtubes per minute will flow into the commando room if a
twisted, damaged periscope has a leak of 1cm in width x 7cm in length.
= 514 litre.
http://www.subsim.com/radioroom/show...ng#post1919186


All the damages are explainable.

Originally Posted by =SE=Sova

I was at periscope depth, 1500 meters from the convoy.Enemy has spoted my periscipe and start to fire with machine gun.I had periscope damage,diesel engine damaged,one oficer hurt,flading,hull damage....

From my military knowlage,... big caliber cant do this.At that distance to penetrate submarine,at that depth.