https://en.wikipedia.org/wiki/German...Flak_Traps.22:
"Two 20 mm quadruple Flakvierling mounts and an experimental 37 mm automatic gun were installed on the U-flaks' decks. A battery of 86 mm line-carrying anti-aircraft rockets was tested (similar to a device used by the British in the defense of airfields), but this idea proved unworkable. At times, two additional single 20 mm guns were also mounted."
No way we can do this in SH5; I will be happy enough if we manage solving the remaining issues with the current gun layout.
By the way: I couldn't find any useful information on this "experimental 37 mm automatic gun" mentioned in the Wikipedia article. Judging from the few photos of an U-Flak available on the web, it had to look more like an
SK C/30U than else, though the latter gun was only semi-automatic (additional information on it found on
navweaps.com)
Side view of U-441's conning tower after her refitting as a "Flak trap". 37 mm gun on the left.
The 37 mm SK C/30U Flak gun as fitted on U-103.
My impression is confirmed by a drawing of U-441's conning tower I found on the web, though I ignore its original source:
Going back to the game, I have noticed you have picked the SK C/30 as standard stern gun, and this is in conformity with the information I have gathered above. Should you feel that for gameplay reasons we need to make provisions for a gun upgrade, I could create a clone of the SK C/30 to be used as an upgrade, giving it an higher rate of fire compatible with the one of an automatic gun of the time. I am afraid that the other 37 mm Flak available in game, (i.e. the
Flak M42, more info on it
on navweaps), though being an automatic gun since it entered service, wouldn't be a realistic option, as it became available only in 1944.
As for bow and wintergarten guns, imo we should leave the two quad 20 mm Flaks as the only possible option, available from U-boat issue. Adding the weight of one or two 37 mm guns forward, would have made U-Flak's maneuverability even clumsier than it already was, not to mention the fact that we haven't managed making two 37mm guns player-operable on the same boat yet.
