Supermarine Sea Lion II

__NOTOC__ Infobox Aircraft
name=Sea Lion II and III


caption=
type=Racing flying-boat
manufacturer=Supermarine Aviation Works
designer=
first flight=1922
introduced=
retired=
status=
primary user=
more users=
produced=
number built=1
variants with their own articles=The Supermarine Sea Lion II was a British racing flying boat designed and built by the Supermarine Aviation Works for the 1922 Schneider Trophy at Naples, Italy which it went on to win. The earlier racing flying boat for the 1919 Schneider Trophy the Sea Lion I was a different design.

Development

In need for a contender for the 1922 Schneider Trophy race Supermarine developed a racing flying boat as a modification of their Sea King II. The Sea King was a single-seat biplane amphibian powered by a 300hp Hispano Suiza engine in pusher configuration that had first flown in 1921. Modified as a flying boat with a 450hp Napier Lion engine, "G-EBAH" was entered into the 1922 race. Flown by Henri Baird, it won the race at an average speed of 145.7 mph (234.48km).

For the 1923 Schneider Race to be held at Cowes, England, the aircraft was re-engined with a 550hp (410kW) Napier Lion and redesignated Sea Lion III. The aircraft only managed third place behind the American Curtiss CR-3 seaplanes. The aircraft was transferred to the Royal Air Force in 1923.

Operators

;UK
*Royal Air Force
*Supermarine Aviation Works

pecifications (Sea Lion II)

aerospecs
ref= [http://www.britishaircraft.co.uk/aircraftpage.php?ID=200 British Aircraft Directory]
met or eng?= eng
crew=1
capacity=
length m=
length ft=24
length in=9
span m=
span ft=32
span in=0
swept m=
swept ft=
swept in=
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rot dia m=
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rot dia in=
dia m=
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width m=
width ft=
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height m=
height ft=
height in=
wing area sqm=
wing area sqft=384
swept area sqm=
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volume m3=
volume ft3=
aspect ratio=
empty weight kg=
empty weight lb=2115
gross weight kg=
gross weight lb=2850
lift kg=
lift lb=
eng1 number=1
eng1 type=Napier Lion
eng1 kw=
eng1 hp= 450
eng1 kn=
eng1 lbf=
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eng2 number=
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max speed kmh=
max speed mph=160
max speed mach=
cruise speed kmh=
cruise speed mph=
range km=
range miles=
endurance h= 3
endurance min= 0
ceiling m=
ceiling ft=
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climb rate ftmin=
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armament1=
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ee also

aircontent
see also=
*Schneider Trophy
related=
similar aircraft=
sequence=
lists=
*List of seaplanes and flying boats

References

* A.J.Jackson, "British Civil Aircraft since 1919" Volume 3, Putnam & Company, London, 1974, ISBN 370 10014 X
* The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 2992
* [http://www.britishaircraft.co.uk/aircraftpage.php?ID=200 British Aircraft Directory]