If it weren’t for Gszabi saying anything, I would assume that this doesn’t have anything to do with submarines and is instead just a new effect for Naval mode, making ships sinking seem more realistic with debris coming up afterwards.
But you know I’m going to get hyped about anything relating to submarines so LET’S GOOOOOOOOO
1991 F-15E in the desert storm infrared & medium-range Air-to-Air Missile like F-15A, Pratt & Whitney F100-PW-220 engine and 1st gen target designator pods LANTIRN (AN/AAQ-14 targeting pod & AN/AAQ-13 navigation pod) but not integrated JHMCS and not armed AIM-9X Sidewinder & AIM-120 AMRAAM
Air-to-Ground weapons dumb bomb & unguided rocket. guided munitions AGM-65B & AGM-65D Maverick, GBU-10 & GBU-12 Paveway II, GBU-24 Paveway III laser guided bomb and GBU-15(V)1/B & GBU-15(V)2/B but without GPS precision-guided munition
In my opinion, F-15C with AN/APG-63(V)2 or AN/APG-63(V)3 AESA radar coming to 3 or 4 years.