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Nakajima J1N Gekkō

Empire of Japan ·first flew 1941· heavy fighter, night fighter

Nakajima J1N Gekkō, photo 1 of 1
1/1 SDASM Archives· Public domain

what is it?

The Nakajima J1N Gekkō (月光; moonlight) is a twin-engined heavy fighter designed and produced by the Nakajima Aircraft Company. It was assigned the Allied reporting name Irving. The J1N was developed during the late 1930s and early 1940s at the behest of the Imperial Japanese Navy (IJN).

How to recognise it: 2 piston engines with propellers · 17 m wingspan

base stats

  • speed 507 km/htop speed
  • range 2,545 kmwithout refuelling
  • size 8,184 kgmax take-off weight
  • built 479made in total

Bars compare against all aircraft: 3,500 km/h, 20,000 km, 850 seats; size and number built on a log scale up to 640 t (An-225) and 45,000 built (Cessna 172).

fun facts

  • First flew 85 years ago, in 1941.
  • Top speed is 3.9× a car on the Dutch motorway (130 km/h).
  • Wingspan of 17 m: about 4 cars parked nose to tail.
  • Range of 2,545 km: 14× Amsterdam to Brussels.

piston: A car-like piston engine turning a propeller: simple and cheap, the classic small plane.

spec sheet

first flight
1941-05
introduced
1942
retired
1945
status
retired
number built
479
role
heavy fighter, night fighter
origin
Empire of Japan
makers
Nakajima
engines
2× Nakajima NK1F Sakae 21
crew
2
length
12.8 m
wingspan
17 m
height
4.6 m
max take-off weight
8,184 kg
top speed
507 km/h
cruise speed
333 km/h
range
2,545 km

Specs are for the version in the Wikipedia article's specification section. Blank means the sources don't say.

Sources: Wikidata Q673413, Wikipedia: Nakajima J1N Gekkō (CC BY-SA 4.0).Updated 2026-10-24.

stan runge 704880d source