yeah I have tried it several times, with no result. Torpedoes with a shell controller will disappear when they hit the water and a torpedo spawned using waterinteraction will always head north.
I've been very close once, even hitting the target with the torpedoes I fired, but they failed to detonate. Not just duds, they went straight through the ship as if it were the flying dutchman instead of a japanese destroyer.
anyway, if you're interested, i did it by adding a torpedo to a stationary shell floating above the water surface (unless its speed = 0 a shell floating above the water will disappear after a few hundred metres)
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