Perhaps just an accidental similarity to the Beriev Be-112 proposal ?
(picture from the book Beriev aircraft 1968-2002, sorry, for more details
regarding this book, please ask boxkite, I can't read cyrrilic letters ! : )
NIAT 2.5 ST Freighty:twin turboprop light amphibious cargo/passenger aircraft,
it was a cantilever high wing monoplane,constant-chord wings,without sweep,
retrangular section twin-step flying boat hull;
Estimated Speed : 350-400 km/h
powered by two 1380 hp Omsk Mars TVD-20 turboprops.
Program:Initial design and market studies completed beginning June 1995; series production and certification planned originally for 1997.
Customers: Estimated domestic market for 350 aircraft, primarily for fuel and power engineering companies, government and local authorities and shipping companies; estimated export market for 300 aircraft. Originally planned production of seven aircraft in 1997, 30 in 1998 and 60 in 1999, but no news of progress.
Costs: Investment of approximately $2.5 million sought for program launch; basic aircraft cost estimated at $1 million to $3 million US in 1997.
Design features: Cantilever high-wing monoplane; constant chord wings without sweep; rectangular-section twin-step flying-boat hull; twin outward-canted and sweptback tail fins with tailplane mounted near tips; stabilizing float carried on long-chord fairing each side of hull.
Flying controls: Conventional three-axis; aileron and two-section flaps over full span of each wing; twin rudders and elevators.
Landing gear: Retractable tricycle type; twin wheels on each unit; main wheels retract into floats.
Powerplant: Two 1,029 kW (1,380 shp) Omsk Mars TVD-20 turboprops; other engines optional.
Accommodation: Unobstructed cabin space for such vehicles as minibuses, loaded via rear ramp and side-hinged doors forming top of rear fuselage aft of wings when closed; door on each side of flight deck; horizontally split two-piece main cabin door at rear on port side. Seats at front of cabin in combi version; emergency exit window each side under wing.
Wing span: 20.0 m (65 ft 7.5 in)
Length overall: 16.15 m (53 ft 0 in)
Height overall: 5.41 m (17 ft 9 in)
Tailplane span: 8.00 m (26 ft 3 in)
Weights and loadings: Not available
Nominal speed in level flight 188-215 kts (350-400 km/h; 217-248 mph)
Take-off run on land: 530 m (1,740 ft)
Take-off run on water: 655 m (2,150 ft)
Landing run on land: 620 m (2,035 ft)
Landing run on water: 700 m (2,297 ft)
Max range with 2,500 kg (5,511 lb) cargo 323 n miles (600 km; 372 miles)
Max range with 1,000 kg (2,205 lb) cargo 809 n miles (1,500 km; 932 miles)