[propbeanie]

It's easy to tie my shoes also, but if I don't have them on, what does it matter? Something else important has to happen to the sub, namely, you have to get the new conning tower that takes the M32 scheme. Similar happens with certain onboard gear. You have to have the conning tower that accepts it. Qualifying for the new conn also begins on 1st Jan 1943. Conning towers are one of the worst "upgrades" in the game, since they come in lieu of a new boat. If a new boat is available, you will get a new boat instead of a conning tower. If you refuse the new boat, you are also refusing a new conn. If you qualify for a new boat, and there are none available at that time, then you will be offered a new conning tower, if there is one of those available. There is no way to change that game behavior. If you start a new career after 1 Jan 1943, you do get the new conn. Go figure.