Attacking the U-505
On June 4, 1944 at 11:10am, the USS Chatelain reported a sonar contact and the Task Group jumped into action. The USS Guadalcanal could not attack without damaging itself so Captain Gallery moved the ship quickly out of harm's way. Supported by the Destroyer Escorts USS Pillsbury and USS Jenks, the USS Chatelain swiftly attacked.
As the sonar crew maintained contact with the submerged U-505, the USS Chatelain attacked with a salvo of hedgehogs that missed. While the USS Chatelain opened the range to turn and make another attack, two fighter planes from the USS Guadalcanal fired their guns into the water to help mark the location of the submerged U-505. The USS Chatelain then fired a pattern of depth charges, forcing U-505 to the surface.