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Japan's Imperial Navy flag

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

Photos

  • Kyushu Q1W Tokai anti-submarine
  • Kyushu Q1W Tokai anti-submarine

 

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 17-Shirequirement for over water operation and use dive bombing to deliver its attacks.

Nojiri was the designer of the Q1W. He made the cockpit with a similar layout as the German Ju 88.

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 Q1W1 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.
  • Production: September 1943 - August 1945

Variants

  • Kyushu Q1W1, Navy Patrol Plane Tokai (eastern sea) Model 11: Main production.
  • Kyushu Q1W1-K Tokai Ren: Trainer. All wood construction with four seats.
  • Kyushu Q1W2 Tokai Model 21: 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. The Q1W1s were unfortunately slow and easily shot down by Allied planes.

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
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
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 3 variable pitch
Dimensions  
Span 52' 5 29/32", 52' 6"
16 m
Length 39' 7 25/32", 39' 8"
12.085 m
Height 13' 6", 13' 6 1/8"
4.118 m
Wing area 411.287 sq ft
38.21 sq m
Weight  
Empty 6,839 lb
3,102 kg
Load - Normal 10,582 lb
4,800 kg
Load - Maximum 11,742 lb
5,318 kg
Performance  
Speed at 4,395' / 1,340 m 200 mph
322 kph
174 knots
Speed - Cruising 150 mph
241 kph
Speed - Cruising at 3,280' / 1,000 m 150 mph
130 knots
Climb to 6,560' / 2,000 m 8.7 minutes, 8 minutes 44 seconds
Service ceiling 14,730'
4,490 m
Range 834 miles
834 statute mile
1,342 km
725 nautical miles
Armament 1: MG
1: 20 mm
Cockpit - Rear 1: 7.7 mm Type 92
Forward Firing 1 or 2: 20 mm Type 99
Bombs 1,100 lb
Bombs or Depth Charges 2: 551 lb
2: 250 kg

Sources:

  1. Aircraft of WWII, Stewart Wilson, 1998
  2. World War II Airplanes Volume 2, Enzo Angelucci, Paolo Matricardi, 1976
  3. Japanese Aircraft of the Pacific War, René J Francillon, 1970
20th Century American Military History Crucial Site