We just got a couple of these in at the game store that I work for. Has anyone here played it?
https://www.boardgamegeek.com/boardgame/177725/they-come-unseen
Apparently it was designed by a sub commander, Andrew Benford. I think that some of the components look interesting, like the acrylic sonar overlays. If anyone’s interested, I can try to give it a play and post a review of it here.