I give up.

[Decoman]

It would be nice to see some hints in game as to how a submarine is understood to be either silent or noisy.

The game now has some info displayed about the two periscopes, and I liked learning this. It said something like that the observation periscope was more suitable for night time operations. I wonder if this is a functionality that is reflected with the options given to the player in this game.

The ekstra info in-game, about various technologies would only really make sense if this can be adequately represented in a simulated environment like the silent hunter games.

Perhaps the wording is critical. Instead of saying "The attack periscope bla bla", it should say "In ww2, the attack periscope on german u-boats were bla bla". Hinting at some limitation, and not insinuating that something is really simulated in-game.