1968 or 1984? In the first, literally every warship is faster than your torpedoes, and you need to bait them to run into your torpedoes at full speed and/or pincer them with two wire-guided torps. If warships arent the target I dont even bother, I alert them with a torp, go around and chase the fleeing transports.
In 1984 torps are the way, because missiles will bring ASW missiles and helicopters right on top of you. Shoot far, dogleg the torps 4-5k yds before you turn them towards the enemy and create a gap yourself by running perpendicular to the heading of the enemy at 10 knots or so. Dont use planes more than 5 degrees or you might lose a wire, especially if your torps are more than 150 degrees from your bow. Pay attention to what the enemy does immediately after your launch as many warships have towed arrays, might be stationary and listen and so might hear you launch. If they dont hear you launch, they will fire their spread and send their helicopters to wrong direction. If they obviously hear you launch, use a MOSS and again try to create separation to the location where you fired quickly and immediately give targets to your torps, as the missiles will be on their way and you may need to go flank at any time.
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