Nakajima B5N

The Nakajima B5N is a Japanese torpedo-bomber plane and one of three that attacked Pearl Harbor.

Characteristics
The navigator/bombardier/observer position was equipped with a Type 90 bombsight, which was a long vertical tube located in the front-left of the seat. There was also a Type 3 reflector compass for precise navigation that was mounted on the top of the cockpit frame. The radio-operator/gunner position was equipped with one of the standard issue radio sets (e.g., Type 2 Mk3 or Type 96 Mk3 radio) that was mounted in front of the radio-operator/gunner's seat and behind the navigator/bombardier/observer's seat.[6]

The radio-operator/gunner also operated one flexible 7.7 mm (.303 in) Type 92 machine gun at the rear end of the cockpit. One Type 91 torpedo could be mounted on the racks that were fixed eccentrically to the right at the bottom of fuselage. Alternatively, racks could be replaced to carry either one 800 kg bomb (e.g., Type 99 No 80 armor-piercing bomb) or two 250 kg bombs (e.g., Type 98 No 25 land bomb) or six 60 kg bombs (e.g., Type 2 No 6 land bomb). Replacing the racks and exchanging between the torpedo and bombs was not a trivial process and could take more than two hours to complete.

History
Several were seen onboard the Japanese aircraft-carriers, and later launched to attack the harbor. A B5N was the first to attack: one unleashed a torpedo right into the water, where it struck the nearest ship. Then later were seen leaving Hawaii completely.

Trivia

 * The B5N was played by the North American T-6 Texan-trainer in the movie.