acting as an advance ASW escort for the convoy when she picked up an unidentified surface contact on her SG radar. At 19:43, about 11 minutes after the initial radar contact, Turners lookouts made visual contact with what proved to be a German submarine running on the surface, decks awash, at about distance. Almost simultaneously, Turner turned hard to starboard and opened fire with her , Bofors, and Oerlikon guns. During the next few seconds, the destroyer scored one hit on the U-boat's conning tower as well as several 40- and 20-millimeter hits there and elsewhere. The submarine began to dive immediately and deprived Turner of any opportunity to ram her. However, while the U-boat made her dive, Turner began a depth-charge attack. She fired two charges from her port K-gun battery, and both appeared to hit the water just above the submerged U-boat. Then, as the destroyer swung around above the U-boat, Turner rolled a single depth charge off her stern. Soon after the three depth charges exploded, Turner crewmen heard a fourth explosion, the shock from which caused the destroyer to lose power to her SG and SD radars, to the main battery, and to her sound gear. It took her at least 15 minutes to restore power entirely. Meanwhile, she began a search for evidence to corroborate a sinking or regain contact with the target. At about 20:17, she picked up another contact on the SG radar — located about off the port beam. Turner came left and headed toward the contact. Not long thereafter, her bridge watch sighted an object lying low in the water. Those witnesses definitely identified the object as a submarine which appeared to be sinking by the stern. Unfortunately, Turner had to break contact with the object in order to avoid a collision with another of the convoy's escorts. By the time she was able to resume her search, the object had disappeared. Turner and the destroyer escort remained in the area and conducted further searches for the submarine or for proof of her sinking but failed in both instances. All that can be said is she probably heavily damaged an enemy submarine and may have sunk her. No conclusive evidence exists to support the latter conclusion. The attacked sub may have been . Destruction On 24 October, the two escorts rejoined the convoy, and the crossing continued peacefully. When the convoy