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Mitsubishi Type 1 Attack Bomber / G4M (Betty)
Technical Information

Background
Redefined Naval bomber operations because of its extremely long range. For comparison, RAF crews struggled 900 miles to Germany, Japanese Navy crews hauled similar bomb loads to targets twice as far away in spacious, well equipped G4M1 Betty bombers, making it one of the outstanding bombers of its time.

Notorious for its tendency to catch fire due to the bomber's large unprotected fuel tanks that tended to explode when hit by even short burst of enemy fire. Later, attempts were made to protect the fuel tanks.

The tail position was armed with a 20mm cannon Type 99 flexible cannon type 1 (99Shiki 20mm Senkai-kiju 1gata). The weapon had a round magazine with 45 rounds that weighed 16.5 kg (36.38 pounds). Alternately, there was a round magazine with 30 rounds.

G6M1-L Betty (Transport Version)
Transport version of the G4M1 Betty bomber. This variant had several differences, including lack of a middle row of windows on the sides of the nose. The pitot tube was more forward on the nose. The waist blister were nearer to the wing and struts different. The position of the antennas on the top of the fuselage was different and this model lacked a loop antenna. The shape of the fuselage door was different. The type lacked armament.

Production
A total of 2,446 Bettys were built.

Technical Details
Crew  7-10 (pilot, co-pilot, navigator, mechanic, gunner, gunner, gunner)
Engine  2 x Mitsubishi MK4P Kasei 21 fourteen-cylinder air-cooled propellers (G4M2)
Span  25m
Length  20m
Height  6m
Maximum Speed  236 km/h
Range  3,270 miles
Armament  (nose, turret, waist) 7.7mm machine guns (tail) 20mm cannon
Bomb load  1 x 800 kg aerial torpedo or up to 1,000 kg of bombs
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