Understood. Now say I start a career in mid-1942... it seems like "suicide" to start without certain upgrades such as decent hydrophones and improved batteries, it would be like taking a 1939 boat out with a rookie crew and asking the veteran tommies to "drop a can of barley on our bleedin' wonkers"
(pardon my french)
So... any way to equip your uboat and then alter save game files to make sure the upgrades stay?