Supermarine Walrus Totally Explained

Everything about Supermarine Walrus totally explained

The Supermarine Walrus was a British single-engine amphibious biplane reconnaissance aircraft designed by R. J. Mitchell and operated by the Fleet Air Arm. It also served with the Royal Air Force, RAAF, RNZN, RCAF, and RNZAF.

Development

The Walrus was initially developed for service from cruisers in response to a request from the Royal Australian Air Force (RAAF), and was originally called the Seagull V; although there was little resemblance to the earlier Supermarine Seagull III. It was designed to be launched from ship-borne catapults, and was the first amphibious aircraft in the world to be launched by catapult with a full military load.
   The lower wings of this biplane were set in the shoulder position with a stabilising float mounted under each one, with its horizontal tail-surfaces being positioned high on the tail-fin. The wings could be folded on ship, giving a stowage width of 17 ft 11 in (5.5 m). The single Bristol Pegasus VI radial engine was housed in a nacelle slung from the centre section of the upper wing and powered a four-blade propeller in pusher configuration. One of the more unusual characteristics of the aircraft was that the control column wasn't a fixed fitting in the usual way, but could be unplugged from either of two sockets at floor level. It became a habit for only one column to be in use; and when control was passed from the pilot to co-pilot or vice-versa, the control column would simply be unplugged and handed over.
   As the Walrus was stressed to a level suitable for catapult-launching, rather surprisingly for such an ungainly-looking machine, it could be looped and bunted, whereupon any water in the bilges would make its presence felt. This usually discouraged the pilot from any future aerobatics on this type.
   Armament usually consisted of two Vickers K machine guns, one in each of the "open" positions in the nose and rear fuselage; with the capability of carrying 760 lb (345 kg) of bombs or depth charges mounted beneath the lower wings.
   The RAAF ordered 24 examples directly off the drawing boards, under the Seagull V 'A2' designation, which were delivered for service from cruisers from 1935; followed by orders from the Royal Air Force with the first production Walrus, serial number K5772, flying on 16 March, 1936. It was also hoped to capitalise on the aircraft's successful exports to Japan, Spain, etc.
   A total of 740 Walrus were built in three major variants: the metal-hulled Seagull V and Walrus I, and the wooden-hulled Walrus II. The Walrus was affectionately known as the "Shagbat" or sometimes "Steam-pigeon"; the latter name coming from the steam produced by water striking the hot Pegasus engine.

Operational history

The first Seagull V, A2-1, was handed over to the Royal Australian Air Force in 1935, with the last, A2-24 delivered in 1937. The type served aboard HMA Ships Australia (MTO [MediterranianTheatre of Operations]), Canberra (MTO, SWPA, lost at Guadalcanal in 1942), Sydney (MTO, SWPA, lost off the coast of Western Australia 1942), Perth and Hobart.
Walrus deliveries started in 1936 when the first example to be deployed was with the New Zealand division of the Royal Navy, on HMS Achilles (later a victor of the Battle of the River Plate). By the start of World War II the Walrus was in widespread use, and saw service in British home waters, the Mediterranean and the Far East. Walrus are credited with sinking or damaging at least five enemy submarines, while RAF use in home waters was mainly in the air-sea rescue role. One Walrus, HD874, (restored and exhibited at the RAAF Museum, Point Cook, Victoria) was still in service in 1947 with the Australian Antarctic Expedition.
The Irish Air Corps used the Walrus as a maritime patrol aircraft during the Irish Emergency of World War II. One example formerly flown by the Air Corps was bought back by the Fleet Air Arm after the war for use as a training aircraft, and having been preserved (in Royal Navy colours) it now resides in the RNAS museum in Yeovilton.

Variants

Seagull V ť Original Metal-hull version.

;Walrus I ť Metal-hull version.

Walrus II ť Wooden-hull version.

Operators

Military operators

;

Royal Australian Air Force
French Navy
;
Royal New Zealand Air Force
- No. 5 Squadron RNZAF
- Seaplane Training Flight

Further Information

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