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92-407: The Canadair CL-215 ( Scooper ) is the first model in a series of flying boat amphibious aircraft designed and built by Canadian aircraft manufacturer Canadair , and later produced by Bombardier . It is one of only a handful of large amphibious aircraft to have been produced in large numbers during the post-war era, and the first to be developed from the outset as a water bomber . The CL-215

184-562: A United States naval aviator in an M.5. The Aeromarine Plane and Motor Company modified the Felixstowe F.5 into Aeromarine 75 airliner flying boats which with Aeromarine West Indies Airways flew Air Mail to Florida, Bahamas, and Cuba along with being passenger carriers. The German aircraft manufacturing company Hansa-Brandenburg built flying boats starting with the model Hansa-Brandenburg GW in 1916. The Austro-Hungarian firm, Lohner-Werke began building flying boats, starting with

276-722: A constant 15-degree flaps position is used for both low speed and low altitude flight, while the need to adjust the aircraft's trim has been minimised during operations such as water uptake and dropping. Both the structure and systems on board the aircraft were reportedly designed to ease manufacture and maintenance. The primary structure is compliant with fail-safe design principles, as well as with attention paid to minimising built-in residual stresses and maximising protection against corrosion; as such, conventional alloys are used throughout, while numerous materials, including magnesium , are excluded to reduce reactivity. For this purpose, Canadair paid heed to requirements previously defined by

368-469: A five-seat Sanchez-Besa from 1 August 1912. The French Navy ordered its first floatplane in 1912. None of these crafts to date were flying boats. In 1911–12, François Denhaut constructed the first flying boat , with a fuselage forming a hull, using various designs to give hydrodynamic lift at take-off. Its first successful flight was on 13 April 1912. Throughout 1910 and 1911 American pioneering aviator Glenn Curtiss developed his floatplane into

460-401: A flexible combi configuration. Under typical operations, these applications would harness the aircraft's ability to land and takeoff from the water, the hull having been designed to enable its use upon the open seas. The CL-215 was designed to perform well in the aerial firefighter role. The apparatus is designed around previously-proven concepts and careful design. The aircraft's belly houses

552-698: A fully enclosed cabin. Trials of the America began on 23 June 1914 with Porte also as Chief Test Pilot; testing soon revealed serious shortcomings in the design; it was under-powered, so the engines were replaced with more powerful engines mounted in a tractor configuration. There was also a tendency for the nose of the aircraft to try to submerge as engine power increased while taxiing on water. This phenomenon had not been encountered before, since Curtiss' earlier designs had not used such powerful engines nor large fuel/cargo loads and so were relatively more buoyant. In order to counteract this effect, Curtiss fitted fins to

644-581: A further sum" from the Women's Aerial League of Great Britain. American businessman Rodman Wanamaker became determined that the prize should go to an American aircraft and commissioned the Curtiss Aeroplane and Motor Company to design and build an aircraft capable of making the flight. Curtiss' development of the Flying Fish flying boat in 1913 brought him into contact with John Cyril Porte ,

736-585: A glide." At Felixstowe, Porte made advances in flying boat design and developed a practical hull design with the distinctive "Felixstowe notch". Porte's first design to be implemented in Felixstowe was the Felixstowe Porte Baby , a large, three-engined biplane flying-boat, powered by one central pusher and two outboard tractor Rolls-Royce Eagle engines. Porte modified an H-4 with a new hull whose improved hydrodynamic qualities made taxiing, take-off and landing much more practical, and called it

828-493: A heavily modified Short Empire flying boat. The larger Maia took off, carrying the smaller Mercury loaded to a weight greater than it could take off with. This allowed the Mercury to carry sufficient fuel for a direct trans-Atlantic flight with the mail. Unfortunately this was of limited usefulness, and the Mercury had to be returned from America by ship. The Mercury did set a number of distance records before in-flight refuelling

920-459: A joint bid. A company under combined ownership was then formed, Qantas Empire Airways. The new ten-day service between Rose Bay, New South Wales (near Sydney ), and Southampton was such a success with letter-writers that before long the volume of mail was exceeding aircraft storage space. A better solution to the problem was sought by the British government during the early 1930s, who released

1012-409: A lengthy lifespan. Canadair's market research indicated that there were many aging seaplanes for which operators required a modern replacement. On 1 February 1966, the programme was authorised to proceed. On 23 October 1967, the first prototype performed its maiden flight . By November 1968, Canadair had decided to commit to an initial production batch of 30 aircraft. During June 1969, the first CL-215

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1104-459: A pair of Pratt & Whitney Canada PW123AF turbine engines . Speaking during the new model's development, company officials recognised that market demand for the CL-215T was marginal, and thus not enough to justify developing an all-new aircraft. Canadian transport conglomerate Bombardier Aerospace (who had acquired Canadair during the 1980s) decided to terminate production of the type during

1196-445: A pair of 1,400 litres (300 imp gal) water tanks of which large downward-facing doors forms their bottoms; these open to rapidly discharge water over a target area. These doors are normally hydraulically actuated and electrically controlled, but a manual release is present for emergency use only; the tanks can be emptied simultaneously, individually, or in sequence at the pilot's selection. Both tanks are positioned directly upon

1288-458: A publicity stunt. It flew to America in 1930–31, crossing the Atlantic via an indirect route over 9 months. It was the largest flying boat of its time, but was severely underpowered and was limited by a very low operational ceiling. Only three were built, with a variety of different engines installed, in an attempt to overcome the lack of power. Two of these were sold to Italy. The Dornier Wal

1380-598: A result of this action, British flying boats were dazzle-painted to aid identification in combat. The Curtiss Aeroplane and Motor Company independently developed its designs into the small Model "F", the larger Model "K" (several of which were sold to the Russian Naval Air Service), and the Model "C" for the U.S. Navy. Curtiss among others also built the Felixstowe F.5 as the Curtiss F5L, based on

1472-449: A retired Royal Navy lieutenant, aircraft designer and test pilot who was to become an influential British aviation pioneer. Recognising that many of the early accidents were attributable to a poor understanding of handling while in contact with the water, the pair's efforts went into developing practical hull designs to make the transatlantic crossing possible. At the same time the British boat building firm J. Samuel White of Cowes on

1564-667: A single Sunderland operating off Norway was attacked by six German Junkers Ju 88C fighters; during the engagement, it shot one down and damaged another until it retreated and drove off the rest. The Germans reputedly nicknamed the Sunderland the Fliegendes Stachelschwein ("Flying Porcupine") due to its defensive firepower. Sunderlands in the Mediterranean theatre proved themselves on multiple high-profile occasions, flying many evacuation missions during

1656-493: A specification calling for a new large aircraft capable of carrying up to 24 passengers in spacious comfort along with adequate room for airmail or freight while simultaneously being capable of a cruising speed of 170 mph and a range of at least 700 miles; the capacity for an extended range of 2,000 miles to serve the North Atlantic route was also stipulated. Originally intended for use by IAL, partner Qantas agreed to

1748-562: A weak hull and poor water handling. The combination of the new Porte-designed hull, this time fitted with two steps, with the wings of the H-12 and a new tail, and powered by two Rolls-Royce Eagle engines, was named the Felixstowe F.2 and first flew in July 1916, proving greatly superior to the Curtiss on which it was based. It was used as the basis for all future designs. It entered production as

1840-479: Is a twin-engine, high-wing aircraft designed in the 1960s. From an early stage, it was developed to perform aerial firefighting operations as a water bomber; to operate well in such a capacity, it can be flown at relatively low speeds and in high gust-loading environments, as are typically found over forest fires . It can also be used for other missions types, including passenger services, freight transport, and air-sea search and rescue operations. On 23 October 1967,

1932-457: Is used as a water bomber; it has been claimed to be the first aircraft designed to withstand the severe aerodynamic and hydrodynamic loads imposed by such usage. Beyond the water bomber role, the CL-215 was designed for use in other capacities, such as a search and rescue platform, passenger transport, and freighter; for this purpose, the cabin can be configured in various different ways, including

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2024-626: Is used to actuate the engine cowl and wing flaps, the wheel brakes , water drop doors and pick-up probes, as well as for undercarriage retraction; each engine also drives a 28V DC generator which powers the aircraft's electrical systems. Over a period of 21 years beginning in 1969, 125 of these aircraft were built and sold to customers in 11 countries. In 2018, there were reportedly around 165 CL-215 and CL-415s in service across 11 countries. As of April 2023 there were 55 CL-215/ CL-415 registered with Transport Canada . CL-215s have been involved in 31 accidents, 20 fatal. Data from Jane's All

2116-491: The CL-215T , a turbine -powered model of the original aircraft which replaces the original Pratt & Whitney R-2800-83AM radial engines with a pair of Pratt & Whitney Canada PW123AF turbine engines. Other changes include the addition of new avionics and various structural improvements. The origins of the CL-215 can be traced back to two earlier project studies conducted by Canadian aircraft manufacturer Canadair ,

2208-622: The CL-43 and CL-204 . The CL-43 was conceived as a logistics aircraft and was based on the design of the Canadian Vickers -built 369 Canso (which was itself a variant of the Consolidated PBY Catalina ). Arising from an earlier 1960s research study at the company, the original concept was for a twin-engined floatplane transport, that was altered into a "firefighter" as a result of a request by forestry officials in

2300-538: The Felixstowe F.1 . Porte's innovation of the "Felixstowe notch" enabled the craft to overcome suction from the water more quickly and break free for flight much more easily. This made operating the craft far safer and more reliable, although similar devices had been in use in France since 1911. The "notch" breakthrough would soon after evolve into a "step", with the rear section of the lower hull sharply recessed above

2392-564: The First World War , flying boats rapidly grew in both scale and capability during the interwar period , during which time numerous operators found commercial success with the type. Flying boats were some of the largest aircraft of the first half of the 20th century, exceeded in size only by bombers developed during the Second World War . Their advantage lay in using water instead of expensive land-based runways, making them

2484-683: The German seizure of Crete , each carrying as many as 82 passengers. One Sunderland flew the reconnaissance mission to observe the Italian fleet at anchor in Taranto before the famous Royal Navy Fleet Air Arm 's torpedo attack on 11 November 1940 . The largest flying boat of the war was the Blohm & Voss BV 238 , which was also the heaviest plane to fly during the Second World War and

2576-603: The Gnome Omega –powered Hydravion , a trimaran floatplane. Fabre's first successful take off and landing by a powered floatplane inspired other aviators and he designed floats for several other flyers. The first hydro-aeroplane competition was held in Monaco in March 1912, featuring aircraft using floats from Fabre, Curtiss, Tellier and Farman. This led to the first scheduled seaplane passenger services at Aix-les-Bains , using

2668-763: The Isle of Wight set up a new aircraft division and produced a flying boat in the United Kingdom. This was displayed at the London Air Show at Olympia in 1913. In that same year, a collaboration between the S. E. Saunders boatyard of East Cowes and the Sopwith Aviation Company produced the "Bat Boat", an aircraft with a consuta laminated hull that could operate from land or on water, which today we call an amphibious aircraft . The "Bat Boat" completed several landings on sea and on land and

2760-648: The Lohner E in 1914 and the later (1915) Lohner L which was copied widely. In September 1919, British company Supermarine started operating the first flying boat service in the world, from Woolston to Le Havre in France , but it was short-lived. A Curtiss NC-4 became the first aircraft to fly across the Atlantic Ocean in 1919, crossing via the Azores . Of the four that made the attempt, only one completed

2852-584: The Quebec Service Aérien ( Quebec Government Air Service ) for a more effective way of delivering water to forest fires. The 1962 preliminary design, designated as the CL-204 , was a purpose-designed water bomber that evolved into an amphibian flying boat configuration, powered by two shoulder-mounted 2,100 hp (1,566 kW) Pratt & Whitney R-2800 piston engines . Reportedly, in excess of 1,700 hours of wind tunnel and water tank testing

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2944-692: The Shin Meiwa US-1A and the Martin JRM Mars . In the 21st century, flying boats maintain a few niche uses, such as dropping water on forest fires , air transport around archipelagos, and access to undeveloped areas. Many modern seaplane variants, whether float or flying boat types, are convertible amphibious aircraft where either landing gear or flotation modes may be used to land and take off. The quest for an aircraft that could take off or land from water began with float planes, which are not flying boats. The Frenchman Alphonse Pénaud filed

3036-492: The United States Navy under MIL-F-7179 , having judged these criteria to be optimal for their purposes. All aluminium components that made direct contact with water were sulphurically anodised and sealed used sodium dichromate ; other aluminium elements received a chromate coating before the exterior paint was applied while steel was plated with a cadmium - titanium alloy. Contact between dissimilar metals

3128-521: The 1930s, flying boats made it possible to have regular air transport between the U.S. and Europe, opening up new air travel routes to South America, Africa, and Asia. Foynes , Ireland and Botwood , Newfoundland and Labrador were the termini for many early transatlantic flights. In areas where there were no airfields for land-based aircraft, flying boats could stop at small island, river, lake or coastal stations to refuel and resupply. The Pan Am Boeing 314 Clipper planes brought exotic destinations like

3220-403: The CL-215 was "one of the very few entirely new large marine aircraft to be put in hand for some 20 years", and that it was the first aircraft to be designed to perform water bombing missions as a primary role. Developing a newer aircraft meant that, unlike its older competitors, the latest techniques to stave off corrosion could be applied, as well as a fail-safe structure, to give the aircraft

3312-594: The CL-415EAF was first flown from Abbotsford, British Columbia on 12 March 2020, to be delivered in April to Bridger Aerospace. The Canadair CL-215 is a twin-engine, high-wing general-purpose amphibious aircraft . It features an atypically spacious fuselage for an amphibian, which is designed to accommodate for the operational needs of various roles that the aircraft was developed to perform. The CL-215 can be used as an airborne firefighting platform, in which capacity it

3404-586: The Canso, the CL-215 required a shorter landing distance and was capable of travelling twice as fast. Prior to the delivery of the first aircraft, plans had already been mooted for the production of multiple models of the type. While the CL-215A served as the standard water bomber configuration, another model, designated as the CL-215C , had been envisioned to dispense with the design compromises as to better perform

3496-600: The Curtiss Model E, and soon tested landings on and take-offs from ships using the Curtiss Model D. In Britain, Captain Edward Wakefield and Oscar Gnosspelius began to explore the feasibility of flight from water in 1908. They decided to make use of Windermere in the Lake District , England's largest lake to test their floatplane. The latter's first attempts to fly attracted large crowds, though

3588-518: The Far East within reach of air travelers and came to represent the romance of flight. By 1931, mail from Australia was reaching Britain in just 16 days – less than half the time taken by sea. In that year, government tenders on both sides of the world invited applications to run new passenger and mail services between the ends of the British Empire , and Qantas and IAL were successful with

3680-473: The Felixstowe F.2A, being used as a patrol aircraft, with about 100 being completed by the end of World War I. Another seventy were built, and these were followed by two F.2c, which were built at Felixstowe. The Felixstowe F.5 was intended to combine the good qualities of the F.2 and F.3, with the prototype first flying in May 1918. The prototype showed superior qualities to its predecessors but, to ease production,

3772-620: The L series, and progressing with the M series. The Macchi M.5 in particular was extremely manoeuvrable and agile and matched the land-based aircraft it had to fight. 244 were built in total. Towards the end of the First World War, the aircraft were flown by the Italian Navy Aviation, the United States Navy and United States Marine Corps airmen. Ensign Charles Hammann won the first Medal of Honor awarded to

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3864-691: The Navy, as a member of the Royal Naval Air Service . Appointed Squadron Commander of Royal Navy Air Station Hendon , he soon convinced the Admiralty of the potential of flying boats and was put in charge of the naval air station at Felixstowe in 1915. Porte persuaded the Admiralty to commandeer (and later, purchase) the America and a sister craft from Curtiss. This was followed by an order for 12 more similar aircraft, one Model H-2 and

3956-569: The River Seine with a towed kite glider on floats. The first of his unpowered flights was 150 yards. He later built a powered floatplane in partnership with Louis Blériot , but the machine was unsuccessful. Other pioneers also attempted to attach floats to aircraft in Britain, Australia, France and the USA. On 28 March 1910, Frenchman Henri Fabre flew the first successful powered floatplane,

4048-479: The World's Aircraft 1984–85, Flight International General characteristics Performance Avionics Related development Aircraft of comparable role, configuration, and era Flying boat Though a flying boat’s fuselage provides buoyancy, it may also utilize under-wing floats or wing-like hull projections (called sponsons ) for additional stability. Ascending into common use during

4140-416: The ability to fill other roles, like maritime surveillance, and maritime search and rescue, when it wasn't fire season. Viking also produced an upgrade kit, the CL-415EAF, which would allow the owners of remaining CL-215 planes to upgrade their engines and avionics to the same level as new CL-515 planes. After being upgraded by Viking Air subsidiaries Longview Aviation Services (LAS) and Cascade Aerospace ,

4232-465: The aircraft crashed into the lake. Wakefield's pilot however, taking advantage of a light northerly wind, successfully took off and flew at a height of 50 feet to Ferry Nab, where he made a wide turn and returned for a perfect landing on the lake's surface. In 1913, the Daily Mail newspaper put up a £10,000 prize for the first non-stop aerial crossing of the Atlantic which was soon "enhanced by

4324-400: The aircraft failed to take off and required a re-design of the floats incorporating features of Borwick's successful speed-boat hulls. Meanwhile, Wakefield ordered a floatplane similar to the design of the 1910 Fabre Hydravion. By November 1911, both Gnosspelius and Wakefield had aircraft capable of flight from water and awaited suitable weather conditions. Gnosspelius's flight was short-lived as

4416-420: The aircraft's centre of gravity so that filling or emptying the tanks has minimal impact upon the aircraft's flying characteristics. Water can be rapidly drawn into these water tanks while the aircraft is moving across a body of water's surface via purpose-built rotatable aluminium scoops; if a collision occurs, these scoops have been designed to break away from the aircraft without damaging the fuselage. To prevent

4508-672: The basis for international airlines in the interwar period. They were also commonly used as maritime patrol aircraft and air-sea rescue , particularly during times of conflict. Flying boats such as the PBY Catalina and Short Sunderland played key roles in both the Pacific Theater and the Atlantic of the Second World War. The popularity of flying boats gradually tailed off during the Cold War era, partially because of

4600-555: The best flying boat of the conflict, the Kawanishi H8K . Its design was based upon its immediate predecessor, the Kawanishi H6K , but was a considerably larger and longer-ranged aircraft designed at the request of the Navy just prior to the outbreak of war. On the night of 4 March 1942, two H8Ks conducted the second raid on Pearl Harbor , refuelling en route by submarine at French Frigate Shoals in order to achieve

4692-604: The change being made official on 1 April 1940. BOAC continued to operate flying boat services from the (slightly) safer confines of Poole Harbour during wartime, returning to Southampton in 1947. When Italy entered the war in June 1940, the Mediterranean was closed to allied planes, and BOAC and Qantas operated the Horseshoe Route between Durban and Sydney using Short Empire flying boats. The Martin Company produced

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4784-667: The design documents and intellectual property rights to the CL-215 and CL-415 to Viking Air . Viking Air had previously purchased the rights to the Twin Otter , and had subsequently opened a production line to manufacture new Twin Otter airframes. Viking announced plans to open a production line to build the CL-515 , an improvement over the CL-415, with more recent avionics, instrumentation to allow it to continue fighting fires at night, and

4876-407: The difficulty in maintaining operations in inclement weather when sea conditions may easily prevent takeoffs and landings while land based aircraft are unaffected, and investments in airports during the conflict that eased the introduction of larger, and more efficient, land-based airliners. Despite being largely overshadowed, limited use of the type continued with some operators, such as in the case of

4968-672: The end of the conflict, the Navy opted to scaled back their order, buying only the five aircraft. The five Mars were completed, and the last delivered in 1947. The U.S. used several 4-engine flying boats during World War II, including those that had been operating as civilian airliners. This included five Boeing B-314 Clippers , four more as the C-98s; two Martin M-130 Clippers ,a Martin XPB2M-1/XPB2M-1R prototype, and one JRM-1 Mars ; three Sikorsky VS-44s (JR2S-1). However,

5060-742: The final Porte hull designs and powered by American Liberty engines . Meanwhile, the pioneering flying boat designs of François Denhaut had been steadily developed by the Franco-British Aviation Company into a range of practical craft. Smaller than the Felixstowes, several thousand FBAs served with almost all of the Allied forces as reconnaissance craft, patrolling the North Sea, Atlantic and Mediterranean oceans. In Italy, several flying boats were developed, starting with

5152-449: The first patent for a flying machine with a boat hull and retractable landing gear in 1876 but failed to build one. Austrian Wilhelm Kress is credited by some with attempting to build the first successful seaplane Drachenflieger , a floatplane , in 1898, although its two 30 hp Daimler engines were inadequate for take-off and it later sank when one of its two floats collapsed. On 6 June 1905, Gabriel Voisin took off and landed on

5244-510: The first prototype performed its maiden flight , and the first production aircraft was handed over during June 1969. While production of the CL-215 was terminated during 1990, this was due to the imminent introduction of an improved variant of the aircraft, which was designated as the CL-415 , the manufacture of which commenced during 1993. Furthermore, numerous conversion and improvement programmes have been developed for existing aircraft, such as

5336-579: The flight plan; the aircraft was a conventional biplane design with two-bay, unstaggered wings of unequal span with two pusher inline engines mounted side-by-side above the fuselage in the interplane gap. Wingtip pontoons were attached directly below the lower wings near their tips. The design (later developed into the Model H ), resembled Curtiss' earlier flying boats, but was built considerably larger so it could carry enough fuel to cover 1,100 mi (1,800 km). The three crew members were accommodated in

5428-513: The flight. Before the development of highly reliable aircraft, the ability to land on water was a desirable safety feature for transoceanic travel. In 1923, the first successful commercial flying boat service was introduced with flights to and from the Channel Islands . The British aviation industry was experiencing rapid growth. The Government decided that nationalization was necessary and ordered five aviation companies to merge to form

5520-468: The forward lower hull section, and that characteristic became a feature of both flying boat hulls and floatplane floats. The resulting aircraft would be large enough to carry sufficient fuel to fly long distances and could berth alongside ships to take on more fuel. Porte then designed a similar hull for the larger Curtiss H-12 flying boat which, while larger and more capable than the H-4s, shared failings of

5612-433: The fuselage as a hull to give the aircraft good handling across many sea states. This hull incorporates a high deadrise angle to reduce impact loads exerted during landings, along with a high step to improve breakaway. Sufficient buoyancy is acquired via multiple watertight bulkheads and a sealed floor attaching directly to the hull frames, two of which serve as attachment points for the wings. Spray compresses are present along

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5704-483: The ground under its own power. The same term is also used for the first launch of rockets . In the early days of aviation it could be dangerous, because the exact handling characteristics of the aircraft were generally unknown. The maiden flight of a new type is almost invariably flown by a highly experienced test pilot . Maiden flights are usually accompanied by a chase plane , to verify items like altitude , airspeed , and general airworthiness . A maiden flight

5796-461: The hull's chine , directing spray away from the propellers, engines, and tail unit, while a purpose-built plate diverts spray from the pilot's windshield. The CL-215 is relatively conventional in terms of its aerodynamics; all of the flying controls use traditional surfaces and are manually actuated via mechanical linkages. It is furnished with a high-mounted low-aspect ratio wing, which is equipped with single-slotted flaps . To simplify pilot workload,

5888-504: The initiative and undertook to purchase six of the new Short S23 "C" class or "Empire" flying boats as well. Being ordered from aviation manufacturer Short Brothers , the Empire was reportedly hailed as being "one of the world's boldest experiments in aviation", while early sceptics referred to the order less favourably as being a 'gamble'. IAL were so impressed by the Empire that it placed a follow-on order for another 11; when combined with

5980-489: The largest aircraft built and flown by any of the Axis Powers . Only the first prototype ever flew, commencing flight trials in April 1944. Months later, it was strafed and partially sunk while moored on Lake Schaal , to the east of Hamburg ; it never returned to flight, instead being intentionally sunk in deep water after the end of the conflict. The Imperial Japanese Navy operated what has been often described as

6072-406: The late 1980s. Although manufacturing did come to an end in 1990, a further improved model, designated as the CL-415 , entered production during 1993. Additionally, multiple conversion and refit programmes have been launched over the following decades to renovate and improve existing aircraft, typically focused on improving aspects such as the engines, avionics and structure. In 2018 Bombardier sold

6164-522: The main 4-engined flying boat of the U.S. forces was the PB2Y Coronado , of which nearly 220 were used in several versions:maritime patrol, bombing, medical/hospital transport, and for regular cargo; it also served with British forces in the Battle for the Atlantic . Maiden flight The maiden flight , also known as first flight , of an aircraft is the first occasion on which it leaves

6256-444: The most notable of these flights was a 43,500 km (27,000 mi) expedition conducted during 1927 and 1928; it was carried out by four Southamptons of the Far East Flight , setting out from Felixstowe via the Mediterranean and India to Singapore . Both the RAF and Supermarine acquired considerable acclaim from these flights, as well as proving that flying boats had evolved to become reliable means of long-distance transport. In

6348-448: The necessary range; poor visibility caused this attack on Pearl Harbor to fail to accomplish any significant damage. An improved H8K2 variant of the type, featuring extremely heavy defensive armament, was also introduced. In November 1939, IAL was restructured into three separate companies: British European Airways , British Overseas Airways Corporation (BOAC), and British South American Airways (which merged with BOAC in 1949), with

6440-430: The original order for 28 flying boats, this was the largest single order to have ever been placed for a British civil aircraft at that time. Delivering the mail as quickly as possible generated a lot of competition and some innovative designs. One variant of the Short Empire flying boats was the strange-looking " Maia and Mercury ". It was a four-engined floatplane "Mercury" (the winged messenger) fixed on top of "Maia",

6532-424: The over-water sectors of the Deutsche Luft Hansa South Atlantic Airmail service. The military value of flying boats was well recognized, and every country bordering on water operated them in a military capacity at the outbreak of the Second World War . Flying boats such as the PBM Mariner patrol bomber, PBY Catalina , Short Sunderland , and Grumman Goose were procured in large numbers. The Sunderland, which

6624-575: The production version was modified to make extensive use of components from the F.3, which resulted in lower performance than the F.2A or F.3. The Felixstowe flying boats were extensively employed by the Royal Navy for coastal patrols, including searching for German U-boats . In 1918 they were towed on lighters towards the northern German ports to extend their range; on 4 June 1918 this resulted in three F.2As engaging with ten German seaplanes, shooting down two confirmed and four probables at no loss. As

6716-541: The prototype XPB2M Mars based on their PBM Mariner patrol bomber, with flight tests between 1941 and 1943. The Mars was converted by the Navy into a transport aircraft designated the XPB2M-1R. Satisfied with the performance, 20 of the modified JRM-1 Mars were ordered. The first of the five production Mars flying boats entered service ferrying cargo to Hawaii and the Pacific Islands on 23 January 1944. Following

6808-501: The remaining as Model H-4 's. Four examples of the latter were assembled in the UK by Saunders . All of these were similar to the design of the America and, indeed, were all referred to as America s in Royal Navy service. The engines, however, were changed from the under-powered 160 hp Curtiss engines to 250 hp Rolls-Royce Falcon engines. The initial batch was followed by an order for 50 more (totalling 64 Americas overall during

6900-406: The sides of the bow to add hydrodynamic lift, but soon replaced these with sponsons , a type of underwater pontoon mounted in pairs on either side of a hull. These sponsons (or their engineering equivalents) and the flared, notched hull would remain a prominent feature of flying boat hull design in the decades to follow. With the problem resolved, preparations for the crossing resumed. While the craft

6992-568: The state-owned Imperial Airways of London (IAL). IAL became the international flag-carrying British airline, providing flying boat passenger and mail transport links between Britain and South Africa using aircraft such as the Short S.8 Calcutta . During the 1920s, the Royal Air Force (RAF) Far East flight performed a series of "showing the flag" long-distance formation flights using the newly developed Supermarine Southampton . Perhaps

7084-472: The successful Curtiss Model D land-plane, which used a larger central float and sponsons. Combining floats with wheels, he made the first amphibian flights in February 1911 and was awarded the first Collier Trophy for US flight achievement. From 1912 his experiments resulted in the 1913 Model E and Model F , which he called "flying-boats". In February 1911, the United States Navy took delivery of

7176-410: The tanks from becoming overfilled, overflow ducts are present at the top of the tanks, which discharge excess water via the sides of the fuselage. The CL-215 is said to handle well in both the skies and upon the water; significant attention was paid in its design to attaining a high level of manoeuvrability while at low speeds. The hull was laid out with considerable forethought, using the full length of

7268-480: The vast distances of the Pacific Theater and the Atlantic , locating enemy vessels and sinking numerous submarines. In May 1941, the German battleship Bismarck was discovered by a PBY Catalina flying out of Castle Archdale Flying boat base , Lower Lough Erne , Northern Ireland. A flight of Catalinas spotted the Japanese fleet approaching Midway Island , beginning the Battle of Midway . On 3 April 1940,

7360-566: The war). Porte also acquired permission to modify and experiment with the Curtiss aircraft. The Curtiss H-4s were soon found to have a number of problems; they were underpowered, their hulls were too weak for sustained operations and they had poor handling characteristics when afloat or taking off. One flying boat pilot, Major Theodore Douglas Hallam, wrote that they were "comic machines, weighing well under two tons; with two comic engines giving, when they functioned, 180 horsepower; and comic control, being nose heavy with engines on and tail heavy in

7452-400: The water bomber mission, allowing it be furnished with larger doors on the sides of the fuselage and a revised underfloor hull structure. Production of the CL-215 progressed through five series. Perhaps the most significant development of the type occurred during the 1980s in the form of the CL-215T , an initiative to replace the original Pratt & Whitney R-2800-83AM radial engines with

7544-417: The wing, although additional tanks can be installed within the outer wing. Deicing measures protect the engine's carburettors , which involves drawing heated air from the engine cylinders over them instead of ambient air. The propellers can also be fitted with electrical heating mats; while these are provisioned for, they were not fitted as standard. Each engine drives a pump for the hydraulic system, which

7636-522: Was "easily the greatest commercial success in the history of marine aviation". Over 250 were built in Italy, Spain, Japan, The Netherlands and Germany. Numerous airlines operated the Dornier Wal on scheduled passenger and mail services. Wals were used by explorers, for a number of pioneering flights, and by the military in many countries. Though having first flown in 1922, from 1934 to 1938 Wals operated

7728-503: Was adopted. Sir Alan Cobham devised a method of in-flight refuelling in the 1930s. In the air, the Short Empire could be loaded with more fuel than it could take off with. Short Empire flying boats serving the trans-Atlantic crossing were refueled over Foynes; with the extra fuel load, they could make a direct trans-Atlantic flight. A Handley Page H.P.54 Harrow was used as the fuel tanker. The German Dornier Do X flying boat

7820-438: Was avoided wherever reasonable to do so, or otherwise insulated from another by four coats of primer. The exterior paint layer consists of wash primer, followed by a coat of epoxy-polyamide primer, and then a final top coat; some areas may received a special synthetic rubber -based sealant coating to prevent moisture ingress. The CL-215 is powered by a pair of 2,200 hp Pratt & Whitney R-2800-83AM radial engines , which

7912-482: Was delivered to the French civil protection agency ( Sécurité Civile , then known as Protection Civile). The aircraft, which was one of a batch of ten, had been purchased under a £4 million arrangement; by July 1970, the order had been completed, along with a third of a 15 aircraft order from the government of Quebec. Quebec had ordered the type as a replacement for their aging fleet of Canso water bombers; in comparison to

8004-527: Was developed in parallel to the civilian Empire flying boat, was one of the most powerful and widely used flying boats throughout the conflict, while Catalinas were one of the most produced ASW of the war, with over 2,661 being produced in the US alone. Flying boats were commonly utilized to conduct various tasks, from anti-submarine patrol to air-sea rescue and gunfire spotting for battleships. They would recover downed airmen and operate as scout aircraft over

8096-478: Was duly awarded the Mortimer Singer Prize . It was the first all-British aeroplane capable of making six return flights over five miles within five hours. In the U.S. Wanamaker's commission built on Glen Curtiss' previous development and experience with the Model F for the U.S. Navy which rapidly resulted in the America , designed under Porte's supervision following his study and rearrangement of

8188-400: Was found to handle "heavily" on takeoff, and required rather longer take-off distances than expected, the full moon on 5 August 1914 was selected for the trans-Atlantic flight; Porte was to pilot the America with George Hallett as co-pilot and mechanic. Curtiss and Porte's plans were interrupted by the outbreak of the First World War. Porte sailed for England on 4 August 1914 and rejoined

8280-508: Was noticeably different from its UK and U.S.-built counterparts. It had wing-like protrusions from the fuselage, called sponsons , to stabilize it on the water without the need for wing-mounted outboard floats. This feature was pioneered by Claudius Dornier during the First World War on his Dornier Rs. I giant flying boat, and perfected on the Dornier Wal in 1924. The enormous Do X was powered by 12 engines and once carried 170 persons as

8372-430: Was regarded as a proven and reliable power unit. Flight International describes this choice as being unusual as these engines were no longer in production, a decision that was somewhat justified by the large numbers of reconditioned units that were available during the 1960s; it was believed that a piston engine would be more durable in a maritime environment. In a standard configuration, fuel is housed across 12 tanks within

8464-444: Was used to help define the aircraft's basic configuration. This design was shaped by a desire for it to be well-suited for performing a range of roles, including air-sea search and rescue , cargo haulage and commercial passenger-carrying, beyond the water bomber mission. The definitive design, which was designated as the CL-215, was publicly revealed at the 1965 Paris Air Show . Aviation publication Flight International observed that

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