It's ironic. In reading about the Atlantic War you come across numerous instances in which U-Boats were short of fuel, stranded, and unable to make it home. Bdu was constantly having to arrange mid-ocean meetings with tankers, milkcows or boats with fuel remaining to get them there. SH3 had the handy return to base teleport button so none of this had to be simulated.
However, I've never read of an instance in which US sub operations were stranded for lack of fuel. But it's constantly happening to players. Maybe that RTB button really became a crutch for all us former SH3 players. Too bad there's not some sort of visual aid to help you keep an eye on what your remaining operational radius is.
