Yokosuka B3Y / Kugisho B3Y

The Kugisho B3Y, or Navy Type 92 Carrier Attack Bomber, also popularly titled Yokosuka B3Y, was a Japanese carrier-based torpedo bomber of the 1930s.

The B3Y was put into production at Aichi, Watanabe and the Hiro Naval Arsenal, 129 of these produced by the time production halted in 1936.

The B3Y1 continued to be prone to engine problems, which frequently caused the type to be grounded.

It served operationally in the early part of the Second Sino-Japanese War, gaining a good reputation for accurate level bombing against small targets. 

Specifications

Crew

3

Length

9.5 m (31 ft 2 in)

Wingspan

13.51 m (44 ft 4 in)

Height

3.73 m (12 ft 3 in)

Wing area

50 m2 (540 sq ft)

Empty weight

1,850 kg (4,079 lb)

Gross weight

3,200 kg (7,055 lb)

Powerplant

1 × Hiro Type 91 520 hp water-cooled W-12,

W-12 water-cooled piston engine,

450 kW (600 hp)

Propellers

2-bladed fixed-pitch propeller

Performance

Maximum speed

219 km/h (136 mph, 118 kn)

Endurance

4 hours 30 minutes

Wing loading

64 kg/m2 (13 lb/sq ft)

Power/mass

0.14 kW/kg (0.085 hp/lb)

Armament

Guns

1× fixed, forward-firing 7.7 mm (.303 in) machine gun &

1× flexible, rearward-firing machine gun in observer’s cockpit

Bombs

1× 800 kg (1,764 lb) torpedo or 500 kg (1,102 lb) bombs.