The Latécoère 611 was a French four-engined maritime reconnaissance flying boat of the Second World War. Although only a single prototype was completed, this served throughout the war, being used by both the Vichy French and Free French navies.
| Latécoère 611 | |
|---|---|
| General information | |
| Type | Flying Boat |
| Manufacturer | Latécoère |
| Primary user | French Navy |
| Number built | 1 |
| History | |
| Introduction date | 1940 |
| First flight | 8 March 1939 |
| Retired | 1947 |
Development and design
editIn May 1935, the French Navy issued a specification for a long-range flying boat to replace the obsolete Breguet 521. To meet this requirement, Latécoère designed the Latécoère 611. This was a cantilever monoplane powered by four Gnome-Rhone 14N radial engines and fitted with a twin tail. It was also fitted with stabilising floats that retracted into the outer engine nacelles. The prototype was assembled at Biscarrosse, and first flew on 8 March 1939.[1]
Although it was intended that the aircraft be armed with a 25 mm cannon in a dorsal turret, this was unavailable, and was replaced by one carrying two 7.5 mm Darne machine guns, with a further four machine guns firing through portholes and two in a retractable tail position. In December 1939 the French Navy placed an order for twelve of a modified version, the Latécoère 612, which was to be powered by four Pratt & Whitney R-1830 radial engines. These aircraft, however, were never delivered.
Operational history
editThe prototype Latécoère 611 was delivered to the French Navy on 12 April 1940[1] and named Achenar, being flown to North Africa in June 1940 and subsequently disarmed under the terms of the Armistice. After being damaged in a collision with another flying boat, it eventually entered full service with the Vichy French Navy on 15 October 1941, operating with Escadrille 4E at Port Lyautey and Dakar.[1]
In November 1942, following the Allied Invasion of North Africa, Escadrille 4E switched sides and joined the Free French, carrying out anti-submarine patrols over the South Atlantic, later (October 1943) being enlarged to form Flotille 7F, which continued to fly the Latécoère 611 alongside Short Sunderlands. The Latécoère was re-armed in 1944, with the dorsal turret being fitted with two 50 cal. Browning machine guns and a similar gun being fitted in the tail.[1]
The sole Latécoère 611 was finally retired from service as a transport in 1947.[2]
Variants
edit- Latécoère 610
- Design studies for a military flying boat to have been powered by 4x 1,000 hp (750 kW) Hispano-Suiza 14AA-02 / Hispano-Suiza 14AA-03 engines, (left and right handed rotation).
- Latécoère 611
- Prototype – powered by four Gnome-Rhône 14N-30 / Gnome-Rhône 14N-31 engines, (left and right handed rotation), given the name Achernar. One built.
- Latécoère 612
- Proposed production version – powered by four Pratt & Whitney R-1830 engines, (twelve ordered but unbuilt).
Specifications (Latécoère 611)
editData from Warplanes of the Second World War, Volume Five, Flying Boats [1]
General characteristics
- Crew: 7
- Length: 27.06 m (88 ft 9 in)
- Wingspan: 40.56 m (133 ft 1 in)
- Height: 7.65 m (25 ft 1 in)
- Wing area: 195.1 m2 (2,100 sq ft)
- Empty weight: 16,034 kg (35,349 lb)
- Gross weight: 26,555 kg (58,544 lb)
- Max takeoff weight: 31,065 kg (68,487 lb)
- Powerplant: 4 × Gnome-Rhône 14N-30/31 14 cyl. air-cooled radial engine, 735 kW (986 hp) each
Performance
- Maximum speed: 349 km/h (217 mph, 188 kn)
- Cruise speed: 180 km/h (110 mph, 97 kn)
- Range: 4,250 km (2,640 mi, 2,290 nmi)
- Endurance: 32 hours
- Time to altitude: 2,000 m (6,600 ft) in 10 minutes
Armament
- Guns:
- 1 × 25 mm (0.98 in) CA mle 39 cannon in a dorsal turret
- 2 × 7.5 mm (0.30 in) Darne machine guns in a tail position
- 4 × 7.5 mm (0.30 in) Darne machine guns in beam positions
- Bombs: up to 802 kg (1,768 lb) of bombs, depth charges or torpedoes
Operators
edit
See also
editAircraft of comparable role, configuration, and era
- Blohm & Voss BV 222
- Kawanishi H8K
- Lioré et Olivier LeO H-246
- Martin PBM Mariner
- Potez-CAMS 141
- Short Sunderland
Related lists
References
edit- ^ a b c d e Green, William (1968). Warplanes of the Second World War, Volume Five, Flying Boats. London: Macdonald. pp. 27–29. ISBN 0-356-01449-5.
- ^ "Histoire de la BAN Saint-Mandrier" (in French). Retrieved 2007-08-14.
Bibliography
edit- Bousquet, Gérard (2013). French Flying Boats of WW II. Sandomierz, Poland: Stratus. ISBN 978-83-63678-06-7.