The fuel "consumption", or lack thereof has been attempted to be dealt with before. We have shortened the "ranges" for the subs, but they are still "off"... Messing with the setting for range also messes with battery use, re-charge, sea-keeping, and all sorts of other idiosyncrasies. We might attempt to deal with this again later, but it is what it is for now. The way the submarine was "modeled" in the game is not correct. You "fix" one thing, and you'll break three others. Plus, the process for testing is a major pain in the bum, and usually does not yield accurate results anyway, since the game does what it wants to in this regard. If you take your boat out from Pearl, and drive for about 30-60 minutes, and ask for a range at current speed, you will get a figure that is relatively accurate for the Class of submarine you are driving. However, as you have observed, the boat does not "use" fuel like it should, and if you ask for range at current speed every day, you will notice that the figure sometimes increases... but then again, sometimes not... As it stands now, you will not run out of fuel inappropriately, and all other systems seem to function as intended, so until we have a LOT of time on our hands, we'll not attempt to adjust that until then...
