|Located near Calshot in Hampshire|
|Type||Seaplane and Flying boat station|
|Ministry of Defence|
|Controlled by||Royal Air Force|
RAF Calshot was initially a seaplane and flying boat station, and latterly an RAF marine craft maintenance and training unit. It was located at the end of Calshot Spit in Southampton Water, Hampshire, England, at grid reference SU487024. It was the main seaplane/flying boat development and training unit in the UK, with the landing area sheltered by the mainland, to the west, north and east, and the Isle of Wight, a few miles away to the south on the other side of the Solent. It closed in 1961.
The station was originally established on 29 March 1913 by the Royal Flying Corps (RFC), as the Calshot Naval Air Station, for the purpose of testing seaplanes for the RFC Naval wing. The station was taken over by the Royal Naval Air Service (RNAS) during the First World War and finally became a Royal Air Force station on the merger of the RNAS and the RFC on 1 April 1918.
- For more detailed pre-RAF history see RNAS Calshot.
1918 to 1939
On the formation of the RAF, Calshot retained the two RNAS flights of Felixstowe flying boats and the flight of seaplanes, and for a short while the station became the headquarters of No. 10 Group RAF. After the war, Calshot continued its crew training and aircraft development role, and became home to the RAF School of Naval Co-operation and Aerial Navigation. The station was officially renamed as RAF Calshot on 5 February 1922.
During this time, Calshot also housed a reconnaissance flight (with Felixstowe flying boats), and a large part of the unit was designated for the training of motorboat crews and other marine craft; the boats mainly used for towing disabled aircraft, collecting bombs from practice runs, and for towing gunnery target boats.
On 24 March 1924, three serving members of the RAF took off from Calshot in a Vickers Vulture amphibious biplane on a planned round-the-world flight. The flight was beset by bad weather and several mishaps, including a crash in Akyab Harbour, Burma (requiring a replacement aircraft); and eventually a forced sea landing near Bering Island ended the attempt.
Calshot also became home for the High Speed Flight as it prepared for the Schneider Trophy competitions in 1927, 1929 and finally 1931. The 1927 competition was held in Venice and won for Britain by the Calshot team in a Supermarine S.5, giving Britain the right to host the race in 1929. Calshot was chosen as the venue and an updated S.5 aircraft covered the seven laps at an average speed of 328.63 mph to take the prize. Two years later, again at Calshot, a Supermarine S.6B won the race for Britain for the third time in a row to retain the Trophy outright.
"Aircraftsman Shaw", also known as T. E. Lawrence, or Lawrence of Arabia, was detached to Calshot to help with the 1929 Schneider races. He was seconded to the nearby British Power Boat Company factory at Hythe, and worked closely with the owner, Hubert Scott-Paine, in the development of the 200 Class Seaplane Tender, a 37½ foot vessel capable of 27 knots. Deliveries commenced in 1932, and at the time it was claimed to be the fastest craft of their size in the world.
Through the 1930s, Calshot continued its development and training role, and included:
- Navigation School (until 6 Jan 1936),
- 201 Sqn - re-formed on 1 Jan 1929 with Supermarine Southampton flying boats, and later with Saro Londons,
- Seaplane Training Sqn (STC) - re-formed on 1 Oct 1931,
- 240 Sqn - re-formed on 30 Mar 1937 from C Flight of the STC, initially equipped with Supermarine Scapas, then Short Singapores, and (by July 1939) with Saro Londons,
- Flying Boat Training Sqn - re-formed on 2 Jan 1939.
Second World War
Just before the outbreak of World War II, the two operational squadrons left Calshot: 201 Sqn to Pembroke Dock and 240 Sqn to Invergordon. Later, in June 1940, the Flying Boat Training Squadron moved away to Stranraer and Calshot became primarily responsible for the repair, maintenance and modification of RAF flying boats, concentrating on the maintenance of Short Sunderlands. The station also continued to provide marine craft maintenance, and to train boat crews.
Calshot sent five seaplane tenders to help in the evacuation at Dunkirk on 31 May 1940 and three of these tenders carried 500 men to safety, with one of them making a successful second voyage. Also in 1940, a small number of ex Norwegian Heinkel He 115 flying boats arrived - later to be used for covert operations, landing and collecting agents from occupied Europe.
From May 1942, the station was home to a number of air-sea rescue (ASR) units, and ASR launches from Calshot took part in the D-Day landings, being positioned off the beach in readiness to rescue downed aircrew as quickly as possible.
1946 to 1961
Operational squadrons returned to Calshot in March 1946, when No 201 Squadron arrived, to be followed a month later by No 230 Squadron, both equipped with Sunderlands. During the Berlin crisis of 1948, all the Sunderland aircraft from Calshot were called into action and flew over 1,000 sorties to the Berlin lakes from Hamburg carrying food into the city and evacuating sick children. On their return from Berlin, both squadrons were transferred to Pembroke.
After this, although some flying continued, the station was primarily a marine craft station, providing ASR, target-towing and range safety launches, and also included No 238 Maintenance Unit, responsible for the servicing of all RAF marine craft.
Two unfinished Saunders-Roe Princess flying boats, designed to carry 100 passengers and have a range of 5000 miles, were cocooned at RAF Calshot near the island hangar, during the 1950s and 1960s, before being scrapped.
On 1 April 1961, the RAF base finally closed, the marine craft work being transferred to RAF Mount Batten.
In 1964, Hampshire County Council negotiated a lease with the Crown Estates to use the site as an Activities Centre. The first course - a sailing one for Hampshire children - commenced on 18 May 1964.
On 25 July 1970 the RNLI sent the Nelson class "Ernest William and Elizabeth Ellen Hinde" lifeboat to Calshot for evaluation, and in 1971 a permanent station was established. As of 2011, a RNLI Tyne class lifeboat, the Alexander Coutanche, is stationed afloat at moorings.
In 1981, a Short Sandringham flying boat, called "The Southern Cross", landed at Calshot after an epic journey across the Atlantic Ocean. This plane is now housed at the Solent Sky aviation museum in Southampton. The last flying Sunderland, "Excalibur", came ashore at Calshot in 1984. After an extensive refit, it was flown to Florida in 1994 to join the extensive collection of Kermit Weeks at Fantasy of Flight.
The site is now used as a base for the RNLI and for HM Coastguard, as well as for the Calshot Activities Centre, which runs courses in a number of water and land-based activities, and uses the original hangars to house indoor climbing walls, artificial ski slopes and a cycle track.
- Late in life, Henry Royce signed the visitors' book at RAF Calshot as "F. H. Royce - Mechanic"
- List of seaplanes and flying boats - United Kingdom
- Seaplane bases in the United Kingdom
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- Lake 1999, p. 9.
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- Jon Honeysett. "The New Forest Guide - Airfields of The New Forest". http://website.lineone.net/~forestguide/History/AirfieldsFrameSet.htm.
- "RAF Structure > Squadrons > Maritime Patrol and Search and Rescue > 201 Squadron". http://www.raf.mod.uk/structure/201squadron.cfm.
- "History of No. 240 Squadron - Royal Air Force History". http://www.raf.mod.uk/history_old/h240.html.
- "Report on Calshot Heritage and Visitor Centre". Hampshire County Council. 18 June 1998. http://www.hants.gov.uk/scrmxn/c27723.html.
- "Calshot History". RNLI. http://rnli.org.uk/rnli_near_you/east/stations/CalshotHants/history.
- "Sir Henry Royce, Bart., O.B.E. (1863–1933) biography". http://www.royce.org.au/fhr_bio.html.
- Lake, A (1999). Flying units of the RAF. Shrewsbury: Airlife. ISBN 1-84037-086-6 CITEREFLake1999.
- "Memories of RAF Calshot - WW2 People's War". BBC. http://www.bbc.co.uk/ww2peopleswar/stories/13/a4052413.shtml.
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