while on the bow planes at 400' on a 350' diesel submarine (USS Salmon SS-573)
I will never forget the Officer of the deck and the Chief of the watch yelling blow negative at the same time.
We came up very fast
for a more qualified study of surfacing a submarine you can go here:
http://www.heiszwolf.com/subs/tech/tech01.html
Quote:
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To surface the boat, the water in the MBT's is forced out by pressurized air. When the boat is deeply submerged, the water is forced out using high pressure air to overcome the water pressure. Once the boat is near the surface, the blowing of the MBT's proceeds with low pressure air. Once at the surface, the Russian boats close the Kingston valve and then opens the main vent valve briefly to equalize the air pressure in the MBT with that of the atmosphere. In the USA/UK boats, the main vent valve remains shut to keep the air in the MBT under pressure. The pressure inside the tanks remains equal to that of the low pressure air system.
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