I am wondering what these are. They look like mini torpedoes. Could they be submarine detection equipment?
hard to tell, but it could be some sort of ventilation cant say for certain though
Newer destroyers had them. Now idea what it is. Towed sensors somehow
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These are most likely paravanes. They’re like underwater kites: you drop them overboard and its hydrofoil (those wing like things) will provide lift and prevent it from dragging along the sea floor. During WWII they were used during mine clearing operations. The hydrofoil will push the paravane away from the ship, pulling the tow cable taut. If the tow cable snags the anchoring cable of a mine, it will cut it, allowing the mine to float to the surface and be destroyed by gunfire. The Germans called it the Otter-Gerät or Räumotter.
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thats probbably it
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Good job. Actually Köln has them too at midships
Yeah, most larger warships towed them from closer to the bow as a self defence measure, although minesweepers usually tow them from the stern instead for some reason. Here’s the Räumotters on the Admiral Hipper and Graf Spee
British ships also carried Paravanes; they apparently were one of the first to use them for minesweeping:
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