Compressed Air Usage

[Subnuts]

Just a quick observation.

Changing depth uses compressed air now, and a blast to blow all ballast can use 15-25%.

This is something that's always bothered me in the SH series. In SH2, it was easy to run out of compressed air and sink simply by changing depth 10 or 15 times while submerged. It seems like they removed compressed air consumption in SH3 and SH4, and reduced the amount of air used to blow ballast tanks. What SH2 got right is that you'd need more compressed air to blow your tanks empty at 200 meters than at say, 50 meters, due to the greater water pressure.

IRL, once a WWII-era submarine was properly trimmed it could change depth dynamically through forward momentum and proper control of the diving planes. Compressed air would be used for blowing the negative tank after crash diving, or for surfacing the boat, but I can't think of any other examples where large amounts of compressed air would be used to change depth. If compressed air is being used *every* time the boat changes depth, your LI is either micromanaging the hell out of your boat's trim, or your crew doesn't understand proper depth control.

Rant mode off.