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Japan's Imperial Navy flag

Japan's Kyushu Q1W Tokai (eastern sea) anti-submarine , reconnaissance
Allied code name: Lorna

Design

The Kyushu Q1W Tokai was designed as a dedicated land based anti-submarine aircraft. The Q1W was designed to meet a 1942 Japanese Navy Air Force requirement for over water operation and use dive bombing to deliver its attacks.

The overall construction was metal.

Radar

Early on the Q1W Tokai was fitted with a poor radar that was supplemented by a magnetic anomaly detector.

It was intended to fit the Q1W with better radar but it had development problems.

Since the radar was almost useless the Q1W crews relied on visual observation to find submarines.

Dive Flaps

The dive flaps could be extended 90 degrees.

Prototype

The Q1W prototype first flew in September 1943.

Production

Deliveries started in late 1944.

  • Kyushu Q1W1-K Tokai Ren: 1
  • Total: 153
    • Manufacturer: Kyushu Hikoki K.K.

Variants

  • Kyushu Q1W1: Main production.
  • Kyushu Q1W1-K Tokai Ren: Trainer. All wood construction. Four seats.
  • Kyushu Q1W2: Rear fuselage was wood.

Usage

The Q1W Tokais were based in Japan, China, and Formosa.

Convoy Protection

The Q1W was used to protect convoys brining materials to Japan.

There is no record of a Q1W ever sinking a submarine.

Specifications

  Kyushu Q1W Tokai
Type Anti-submarine
Crew 3
Engine (Type) 2: Hitachi GK2C Amakaze 31
Cylinders Radial 9
Cooling  
Net HP 610 each
Propeller blades 3 each
Dimensions  
Span 52' 6"
16 m
Length 39' 8"
11.17 m
Height 13' 6"
4.11 m
Wing area  
Weight  
Empty  
Loaded  
Maximum load  
Performance  
Speed  
Cruising speed  
Climb  
Service ceiling  
Range  
Armament  
Rear cockpit 1: 7.7 mm MG
Nose 2: 20 mm
Bombs - external 2: 551 lb
2: 250 kg
OR Depth charges
  Kyushu Q1W1 Tokai
Type Reconnaissance
Crew 3
Engine (Type) 2: Hitachi GK2C Amakaze 31
Cylinders Radial 9
Cooling Air
Net HP 610 each
Propeller blades  
Dimensions  
Span 52' 6"
Length 39' 8"
Height 13' 6"
Wing area  
Weight  
Empty 6,839 lb
3,102 kg
Loaded 10,582 lb
4,800 kg
Maximum load 11,742 lb
5,318 kg
Performance  
Speed @ 4,395' /
1,340 m
200 mph
322 kph
Cruising speed 150 mph
241 kph
Climb  
Climb to 6,560' /
2,000 m
8.7 minutes
Service ceiling 14,730'
4,490 m
Range 834 miles
1,342 km
Armament 1: MG
1: 20 mm
Bombs 1,100 lb

Sources:

  1. Aircraft of WWII, Stewart Wilson, 1998
  2. World War II Airplanes Volume 2, Enzo Angelucci, Paolo Matricardi, 1976
20th Century American Military History Crucial Site