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Vought OS2U Kingfisher

Vought · Ship-based Scout · USA · WWII (1939–1945)

Vought OS2U Kingfisher — Ship-based Scout
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The Vought OS2U Kingfisher was the U.S. Navy's principal catapult-launched battleship-and-cruiser observation floatplane during WWII. Vought-Sikorsky built 1,519 OS2Us between 1939 and 1944. The Kingfisher served on every U.S. Navy battleship and heavy cruiser at sea during the war, providing gunfire spotting, anti-submarine patrol, sea-rescue, and convoy-escort duties. The aircraft also flew the famous January 1944 Pacific Ocean rescue mission for Eddie Rickenbacker (the WWI air ace) and his B-17 crew, picked up after 24 days adrift in the Pacific.

The OS2U was a low-wing two-seat all-metal float aircraft. Power: Pratt & Whitney R-985 Wasp Junior 9-cylinder radial (450 hp). Maximum speed 164 mph; range 805 miles. Armament: one fixed forward-firing .30-cal machine gun + one flexible .30-cal in the rear cockpit + 100-lb bombs or depth charges on underwing racks. The aircraft used a single central float plus two stabilising floats under the wings. The OS2U's deployment used compressed-air catapults launched from battleship and cruiser stern decks; recovery was via crane after the aircraft taxied to the ship.

Combat use was diverse. Battleship-deployed OS2Us spotted naval gunfire during shore bombardments at Guadalcanal, Tarawa, Saipan, and Okinawa. The aircraft's most-publicised mission was the January 1944 rescue of Eddie Rickenbacker — Rickenbacker's B-17D ditched in the Pacific on 21 October 1942; his life-raft drifted for 24 days before two OS2Us spotted him near Funafuti in the Ellice Islands. The aircraft also flew anti-submarine patrols off the U.S. East Coast and Caribbean during the 1942 German U-boat campaign — OS2Us sank or damaged about 5 U-boats during these operations.

Production ended in 1944 as the OS2U was replaced by the Curtiss SC Seahawk. About 9 OS2U airframes survive in 2026, including airworthy examples at Planes of Fame, the National Naval Aviation Museum, and several U.S. warbird collections. The largest static-display Kingfisher is mounted on the deck of the museum battleship USS North Carolina at Wilmington, North Carolina.

For Kids — a shorter, friendlier version

The Vought OS2U Kingfisher was a small plane used by the American Navy in World War II. It was launched from battleships and cruisers using a catapult. A catapult shot the plane into the air like a slingshot. After its mission, a crane lifted it back onto the ship.

The Kingfisher was a floatplane. That means it had large floats instead of wheels so it could land on water. It had one big float under the belly and two smaller floats under the wings. It carried a crew of two people — a pilot and an observer.

The plane had many jobs. It helped spot where cannonballs landed so gunners could aim better. It also looked for enemy submarines and helped guard supply ships. It could drop small bombs and depth charges on submarines it found.

The Kingfisher is famous for a brave rescue. In January 1944, it saved World War I flying ace Eddie Rickenbacker and his crew. They had been floating on rafts in the Pacific Ocean for 24 days! The little plane was smaller than a school bus, but it did a very big job that day.

Vought built 1,519 Kingfishers between 1939 and 1944. The plane flew on every American Navy battleship and heavy cruiser during the war. Its top speed was 164 miles per hour, and it could fly as far as 805 miles.

Fun Facts

  • The Kingfisher was launched by a catapult from the back of a battleship — no runway needed!
  • After each mission, a ship crane lifted the Kingfisher right out of the ocean.
  • The plane had three floats so it could land and float on water instead of using wheels.
  • Eddie Rickenbacker and his crew spent 24 days on rafts before the Kingfisher found and rescued them.
  • The Kingfisher is smaller than a school bus but flew as far as 805 miles on one trip.
  • Over 1,500 Kingfishers were built between 1939 and 1944.
  • The Kingfisher helped destroy or damage five German submarines during the war.
  • Its engine was a nine-cylinder radial engine that made 450 horsepower — like many car engines combined!

Kids’ Questions

How did the Kingfisher take off from a ship?

The ship used a catapult powered by compressed air. The catapult gave the plane a strong push and launched it straight into the sky. There was no runway — just a quick blast and the plane was flying!

Why did the Kingfisher have floats?

The Kingfisher needed floats because it had to land on water, not on a runway. The big float under the belly kept it level, and the two smaller wing floats stopped it from tipping over. This let it take off and land in the ocean.

Who was Eddie Rickenbacker and why did the Kingfisher rescue him?

Eddie Rickenbacker was a famous flying ace from World War I. His plane went down over the Pacific Ocean in World War II. He and his crew drifted on rafts for 24 days before a Kingfisher finally found them and brought them to safety.

What weapons did the Kingfisher carry?

The Kingfisher had two machine guns — one pointing forward and one in the back seat. It also carried small bombs and depth charges under its wings. Depth charges are special explosives made to sink submarines underwater.

Variants

OS2U-1 / -2 / -3
Production sub-variants. -1 (54 built, 1940), -2 (158 built, 1941), -3 (1,006 built, 1942-1944). All used R-985 Wasp Junior engines.
OS2N-1 (Naval Aircraft Factory)
Naval Aircraft Factory licence-built version of the OS2U-3 to relieve Vought production. About 300 built.

Notable Operators

U.S. Navy
Primary user. Approximately 1,200 OS2Us deployed on every U.S. Navy battleship and heavy cruiser during WWII. Catapult-launched from ship stern decks; recovered via crane. Continued service into 1946-1947 before retirement.
Royal Navy / Royal Australian Navy
About 100 OS2Us as Kingfisher I and Kingfisher II in Lend-Lease deliveries. Operated from Royal Navy battleships and cruisers in the Mediterranean and Pacific theatres.
Latin American air forces
Argentina, Chile, Cuba, Dominican Republic, Mexico, Uruguay all operated small OS2U fleets in coastal-patrol roles 1944-1955.

Frequently Asked Questions

How was the OS2U launched from a battleship?

By compressed-air catapult mounted on the battleship's stern deck. The aircraft sat on a wheeled cradle on rails; the catapult fired with about 4 G of acceleration, launching the OS2U into flight at about 60 mph. After landing alongside the battleship, the aircraft taxied to the ship and was lifted aboard by crane.

Did an OS2U rescue Eddie Rickenbacker?

Yes — two OS2U-3s of VS-1-D14 spotted Rickenbacker's life-raft near Funafuti in the Ellice Islands on 13 November 1942, after he had been adrift for 24 days following the 21 October 1942 ditching of his B-17D. The OS2Us landed alongside the raft and Rickenbacker was transferred to the lead aircraft for the flight back to base. The mission became one of the most-publicised air-sea rescues of WWII.

Did OS2Us sink German U-boats?

Yes — about five U-boats were either sunk or damaged by OS2U attacks during the 1942 anti-submarine campaign off the U.S. East Coast and Caribbean. The aircraft's 100-lb depth-charge load was effective against surfaced or shallow-submerged U-boats; at deeper depths the depth charge had insufficient explosive power.

How many OS2Us were built?

1,519 airframes between 1939 and 1944 — 1,219 by Vought-Sikorsky + 300 by the Naval Aircraft Factory. Production ended in 1944 as the type was replaced by the Curtiss SC Seahawk floatplane.

Are any OS2Us still flying?

Yes — about 4 airworthy OS2Us in 2026, mostly at U.S. warbird collections. The static-display Kingfisher mounted on the deck of the museum battleship USS North Carolina at Wilmington is the most-visible preservation example.

Sources

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