Just ran across this game from a post on an Aussie discord.
https://www.facebook.com/groups/300547753802697/aboutA “Cold War Gone Hot” submarine game at the tactical level. After a quick read through of the rules, all I can think of is trying to run a Soviet Kilo through the GIUK line at 1/2400 or 1/4800 scale with a double blind umpired game.
I’m not a naval wargamer but I messed around with a self designed game based on this concept a few decades ago and I love what these guys have done with a simple free game.