Bringing My Amiga 500 Computer Out of Mothballs

Used to play a game on my roomates computer. I think it was an Apple. circa early 1990. It was pretty fun. More of a simulation than an arcade game. Ships would be sonar or radar blips on a large map and it would give you a firing 'solution' for an ASROC (rocket launched torpedo) when in range, simulated how a navy cruiser would hunt ships. Simple game that took about a half hour to learn. Ah, the good 'ol days....Then came DOOM>