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This is the story about the capture of a German U-505 Submarine, by the USS Guadalcanal in the Atlantic ocean, during World War II
Capture and Tow of the German U-boat 505

On May 16, 1945, one of the best kept secrets of World War II was released by the Department of the Navy. On June 4, 1944, one year earlier, 150 miles West of Cape Blanco in French West Africa, a US Navy escort carrier task group captured, boarded and salvaged the German U-boat 505 and towed it 2,500 miles to the Naval Operating Base in Bermuda. The task group, consisting of the baby flattop, USS Guadalcanal and five destroyer escorts: the USS Pillsbury, USS Chatelain, USS Pope, USS Flaherty and USS Jenks, encountered the enemy submarine as it was returning to its base in Brest, France after an eighty day commerce destroying raid in the Gulf of Guinea.

Before sailing, Captain Daniel V. Gallery , Commander of the USS Guadalcanal and task group, gave his men orders to capture the first submarine they sighted. He told the pilots to concentrate attacks on personnel rather than the submarine, only sinking it if necessary. The aim of capturing a German submarine was to get their communications code. Gallery said, "it would be worth taking long chances".


At 11:10 am "one of the most improbable events of the Battle of the Atlantic" began when the Chatelaine radioed the Guadalcanal, "Frenchy to Bluejay - I have a possible sound contact". The submarine was in a perfect position to attack the Guadalcanal. Immediately, the carrier launched its planes. Sighting the submarine, one of the pilots radioed, "Sighted sub - destroyers head from spot where we are shooting". The destroyers fired "hedgehogs", depth charges thrown ahead of the destroyers which explode only on contact. The salvo badly damaged the submarine, forcing it to surface. When the submarine was hit, Ensign J. W. Cadle, flying a Wildcat fighter airplane radioed, "You've struck oil! Sub is surfacing".

On the surface, the submarine circled to the right at seven knots, unable to alter course and flee because of the damage inflicted by the hedgehogs. Small calibre automatic weapons fire forced the German crew to abandon ship. In their haste, the Germans were only able to partially open one scuttling valve in an attempt to sink the boat. They also managed to fire one Torpedo, at the Guadalcanal, but fortunately, it missed. Chatelain also fired a torpedo in an attempt to wart off a possible attack from the submarine, but it also missed.

Captain Gallery ordered the submarine boarded as soon as it reached the surface. A boarding party of sailors from the Pillsbury were the first to reach the boat. They cleared it of all Germans with tommy guns and hand grenades. This boarding marked the first capture of an enemy warship by the US Navy since 1815.

While denying the danger of booby traps and racing against time, the boarding party, reinforced by a larger crew from the Guadalcanal, proceeded to plug all leaks found. During salvage operations, it became necessary for a crew to enter the after torpedo room to manipulate the steering gear to allow the boat to move forward. Captain Gallery, himself opened a suspected booby trap on the hatch to the room.

USS Guadalcanal ACV 60/CVE 60/CVU 60
Launched June 5th 1943, commissioned Sept 25th 1943. Presided in the Atlantic, captured a German U-505 Submarine on June 4 1944. Decommissioned July 15th 1946, stricken May 27 1958. Sold April 30 1959. (Above Photo by: Alex Zar)
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German U-505 Sub
This U-boat was captured by the CVE USS Guadalcanal during WWII. It now resides at the Chicago Museum of Science and Industry at the exhibit called "Ships Through the Ages." (Above Photo by: HARRY LAMM, CLIFFORD WERLE)

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The U505 Sub in tow.
(Above Photo by: Alex Zar)

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Members of the Boarding Party from the USS Guadalcanal go below into the uboat. One man at the left handling a moter-driven billy-pump for pumping out the water below decks. In going below decks these men ran the risk of a horrible death. The hatch had to be closed because of sea swells breaking over the conning tower, if the boat sank, they would have been trapped inside with no way back to the sea's surface.
(Above Photo by: Alex Zar)

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Above photo: "Copywrite 1999-2000 by the Museum of
Science and Industry, Chicago IL USA

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Other Resources:

Gallery, Daniel V., Rear Admiral, US Navy, Away Boarders, from Clear the Decks,   Readers' Digest Vol 60 May 1952

Gallery, Daniel V., Rear Admiral, US Navy, Parade, The Washington Post,"My Friend and I", May 31, 1964

Gallery, Daniel V., Rear Admiral, US Navy, The Story of the U-505, Chicago:  Museum of Science and Industry, 1955.

Gallery, Daniel V., Rear Admiral, US Navy, Twenty Milliom Tons Under the Sea, Henry Rgenery Company, Chicago, 1956

Torpedo Junction Books


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The Pillsbury pulled alongside the U-boat to use its main pumps to pump out the water which threatened to sink the submarine. Both ships were moving together in tight circles to the right. When one of the ropes holding them together broke from the strain, the sub's bow hydroplane slashed the thin side plates of the Pillsbury causing flooding in two of its compartments. She had to withdraw to make repairs. In the meantime, the Guadalcanal's boarding party completed temporary salvage measures and decided that to keep the 505 afloat they would have to tow it. A cheer went up from the ships as the slack in the cable tightened and the submarine rose to the surface as the Guadalcanal picked up speed.

The task force first headed for Dakar, NW Africa until their orders were changed. Since Dakar was full of German spies and the U-boat's capture was to remain a secret, the task force was redirected to Port Royal Bay in Bermuda.

During the towing operation, it became necessary to recharge the submarine's batteries. Mechanics disconnect the diesels from the motor so that the propellers could turn the shaft as the boat was towed. They traced the wiring in the electrical system and set the switches for battery recharge. They were then able to use the U-505's own pumps to remove remaining water bringing the boat to full surface trim.

After three days, the fleet tug, Abnaki, arrive to relieve the Guadalcanal of the towing job. The tanker, Kennebec supplied the carrier with much needed fuel so it could complete the journey. On June 19, the task force brought the 505 into Port Royal Bay, Bermuda. While there, Naval Intelligence found technical and operational data "which played an important part in clinching the battle of the Atlantic and thus shortening the war by some months". Among the important findings was a new type of torpedo, but most important was the German radio code used to direct u-boat operations.

For several months after the war, the U-505 made a tour of Eastern port cities and then tied up at the Navy Yard at Portsmouth, New Hampshire to await final disposition. Since Captain Gallery was from Chicago, the Museum of Science and Industry in Chicago saved it from being either scrapped or sunk at sea. The museum took great pains to have it transferred to a permanent resting place on its grounds "as a permanent memorial to those Americans who have thus lost their lives at sea"

The entire crew of Task Force 22.3 received the Presidential Unit Citation. The words of Captain Gallery during the award ceremonies sums up the capture:

I consider this capture proof for posterity of the versatility and courage of the present day American sailor. All ships in this task group were less than a year old and 80% of the officers and men were serving in their first seagoing ships. All hands did their stuff like veteran sea dogs and airplane mechs became sub experts in a hurry when the chips were down. I'm sure Paul Jones and his men would have been proud of these lads and of the day's work when the US colors went up on the U-505.