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Loening XSL

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Title: Loening XSL  
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Subject: Flying boats
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Loening XSL

The XSL-1
Role Submarine-borne flying-boat
National origin United States
Manufacturer Loening Aeronautical Engineering
First flight 1931
Primary user United States Navy
Number built 1

The Loening SL was an American submarine-based reconnaissance flying boat designed and built by Loening Aeronautical Engineering for the United States Navy.[1][2]

Design and development

First flown in 1931 the Loening SL was lightweight flying-boat designed to be folded up and stored on a submarine within an 8 foot space.[2] It was a single-seat, mid-wing monoplane powered by a 110 hp (82 kW) Warner Scarab radial engine mounted above the wing driving a pusher propeller.[2] Originally designated the XSL-1 by the Navy it was re-designated XSL-2 in 1932 when it was re-engined with a 160 hp (119 kW) Menasco B-6 engine.[2] Only the prototype was built and it was not ordered into production.[1]


Prototype with a Warner Scarab engine.[1][2]
Prototype re-engined with a Menasco B-6 engine.[2]

Specifications (XSL-1)

Data from[2]

General characteristics
  • Crew: 1
  • Length: 27 ft 2 in (8.28 m)
  • Wingspan: 31 ft 0 in (9.45 m)
  • Gross weight: 1500 lb (680 kg)
  • Powerplant: 1 × Warner Scarab radial engine, 100 hp (75 kW)


  • Maximum speed: 100 mph (160 km/h)
  • Cruise speed: 88 mph ( km/h)
  • Service ceiling: 14000 ft (4268 m)

See also

Related lists



  1. ^ a b c Andrade 1979, p. 220
  2. ^ a b c d e f g "Loening". 3 November 2008. Retrieved 23 October 2011. 


  • Andrade, John (1979). U.S.Military Aircraft Designations and Serials since 1909. Midland Counties Publications.  
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