Supermarine Sea Urchin

1920s British racing aircraft design project

Sea Urchin

Role  | Racing flying-boat

Type of aircraft

Manufacturer  | Supermarine Aviation Works
Status  | unbuilt

The Supermarine Sea Urchin was an unbuilt British racing biplane flying boat designed by the Supermarine Aviation Works to compete in the 1924 Schneider Trophy. It was to be a single seat biplane, powered by a Rolls-Royce Condor V-12 water-cooled engine buried in the fuselage, driving a pusher propeller mounted on the upper wing via geared shafts. It was abandoned without being built owing to problems with the engine and the transmission required to drive the propeller.[1]

## Specifications (Sea Urchin - estimated)

[edit]

Data from Supermarine Aircraft Since 1914[1]

General characteristics

* Crew: 1
* Powerplant: 1 × Rolls-Royce Condor V-12 water-cooled piston engine, 600 hp (450 kW) driving the propeller through bevel gearboxes and a transmission shaft
* Propellers: 4-bladed fixed-pitch pusher propeller

## See also

[edit]

* List of flying boats and floatplanes

## References

[edit]

1. ^ a b Andrews & Morgan 1981, pp. 174–175, 356.

## Sources

[edit]

* Andrews, Charles Ferdinand; Morgan, Eric B. (1981). Supermarine Aircraft since 1914. London: Putnam. ISBN 978-03701-0-018-0.

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Supermarine aircraft

Type
numbers|

* 171
* 179
* 184
* 185
* 186
* 187
* 188
* 189
* 190
* 221
* 223
* 224
* 226
* 228
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*   * 513
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* 588
* 589
* 590
* 591
* 592
* 593
* 594
* 595
* 599

* S.1
* S.2
* S.3
* S.4
* S.5
* S.6
* S.6A
* S.6B

By role|

| Racers|

* S.4
* S.5
* S.6
* S.6B
* Sea Lion I
* Sea Lion II
* Sea Lion III
* Sea Urchin

|

Fighters|

* Attacker
* Baby
* Nighthawk
* Scimitar
* Seafang
* Seafire
* Sea King
* Spiteful
* Spitfire
* Swift
* Type 224 (F.7/30)
* Type 312 & 313 (F.37/35)
* Type 545
* Type 559

Bombers|

* Type 322 (Dumbo)
* B.12/36

Reconnaissance and patrol|

* Channel
* Nanok
* Scapa
* Scarab
* Scylla
* Seal II
* Seagull (1921)
* Seagull ASR-1
* Seamew
* Sea Otter
* Sheldrake
* Solent
* Southampton
* Stranraer
* Walrus

Civil|

* Air Yacht
* Channel
* Commercial Amphibian
* Giant
* Sea Eagle
* Sparrow (I & II)
* Swan

Under contract|

* AD Flying Boat
* Baby
* AD Navyplane

Personnel|

| Designers|

* R. J. Mitchell
* Joe Smith

|

Pilots|

* Henry Biard
* Basil Deacon Hobbs
* Jeffrey Quill
* Joseph "Mutt" Summers

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