"Oh, god... the stench... who gave Bernard that burrito?!?!"

Kinda logic that u go faster when you offload torpedoes, boat lighter, also the snorkel gives air to the diesel engine which is more powerfull than the eletric one so i wouldn't call it a bug if your going faster with a snorkel underwater than on the electric.

Also speed depends on weather, whit waves rocking enought you have less speed than on calm waters.

Sorry maybe I wasnt 100% clear above. Lets say your normal Flank Surface speed is 17Knts, your submerged Flank Speed 7Knts. Raise the Snorkel when submerged, with both Diesel engines going, and you get 23Knts. Do a partial submerge with or with out snorkel to a depth of 7-8m and you can now do 24Knts. On a Type VII/IX doing the above can give you a 4-6Knt increase in speed above the normal rated flank speed of the boat.

ive reinstalled sub commander but am still having this prob. i did upgrade the battery before the patrol, would this be another game bug or is it a sub commander issue?

any ideas how i can fix it?

Umm, that's nonsense. The Schnorkel couldn't be used at anything greater than ahead slow or the pressure of the sea against it would damage it/result in the head being submerged, which activated the valve to shut it off to prevent ingesting water.

If the game is allowing this then it's on drugs....

bumpety