Chetverikov ARK-4
# Chetverikov ARK-4

The ARK-4 was a single-engine Soviet flying boat design produced by Chyetverikov.

## Specifications

General characteristics

* Crew: 5
* Length: 14.6 m (47 ft 11 in)
* Wingspan: 20 m (65 ft 7 in)
* Wing area: 59.5 $m^2$ (640 sq ft)
* Empty weight: 3,642 kg (8,029 lb)
* Gross weight: 5,600 kg (12,346 lb)
* Powerplant: 2 × Shvetsov M-25V 9-cylinder air-cooled radial piston engines, 560 kW (750 hp) each

Performance

* Maximum speed: 320 km/h (200 mph, 170 kn)
* Range: 1,500 km (930 mi, 810 nmi)
* Service ceiling: 8,500 m (27,900 ft)
* Rate of climb: 4.76 m/s (937 ft/min)

Armament

* Guns:

       1 x machine gun in a manually operated bow turret
       1 x machine-gun in a dorsal sliding hatch
* Bombs: 1,000 kg (2,200 lb) of bombs
