That was actually from a pentagon war game, with the general van riper, who specialized in thinking like the enemy and using resources the enemy had. The simulation used subs, fast boats and everything else, but focused on fast boat use, and the simulation found the fast boats were extremely hard to detect on radar due to how small they were until it was too late.
Van riper used non traditional warfare in the way a country like iran would, and the biggest wargame ever ended so badly they had to tell van riper to let the americans win. Of course he was known for doing things like leaving the radars in passive mode for air defense so american forces could not find and destroy the launchers(literally what any nation more competent than a fruitfly would do), he also used deceentralized comms, which iran currently has in it's doctrine but he figured it before iran made it a doctrine, showing how his mind works. The guy would command his opfor to use muslim prayer speakers to issue commands so the american forces could not intercept them.
Fyi 19 ships was a typo it was 16 lost in the simulation, and estimated if the ships were fully manned in that simulation 20k military personel lost. Van riper resigned mid wargames after they order him to let americans find missile systems as well as other measures saying let the americans win, which he thought was bs as he was a wargame expert and felt wargames were there to train soldiers and leaders in peacetime as well as be used to learn from failures and losses so doctrine could be adjusted when they were war games and not in real war after major losses.
https://en.wikipedia.org/wiki/Millennium_Challenge_2002