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United States' flagUnited States' Army Air Corps aircraft marking

United States' Martin 167 Maryland; Martin Model 167 Maryland bomber

Design

The Maryland was designed for the United States Army by the Glenn L. Martin Company in the late 1930s by James S. McDonnell (who later founded McDonnell Douglas). The Maryland lost out to the Douglas A-20 Boston.

However, the French ordered 115 / 175 / 215 when told the Maryland could be delivered by the end of 1940.

Prototype

On March 14, 1938 / February 1939 / March 13, 1939 / March 14, 1939 the Maryland XA-22 prototype first flew.

Even though the Maryland performed better than the other bombers put forward by other companies the United States Army did not give Martin the contract.

Production

The aircraft factory was the largest in 1939.

The first Model 167F, for the French, flew in August 1939. The first Marylands came off the production line on September 2, 1939. Deliveries of the Maryland Mk II started in June 1940 and lasted until March 1942.

  • XA-22: 1
  • Model 167F: 139
  • Maryland Mk I: 151
  • Maryland Mk II: 150
  • Total: 341, 441, 496
    • Manufacturer: Glenn L. Martin Co

Variants

  • XA-22: Prototype.
  • Maryland Mk I: Single stage super changed engines. The engines were Martin 167Fs.
  • Maryland Mk II: Two stage super charged engines.

Usage

Britain, France, and South Africa used the Maryland.

France

495 Marylands were sold to France. 75 (140) of them were delivered before the fall of France in 1940.

The Marylands had only a loss rate of 8%, which was the lowest for a bomber in French service.

After the fall of France, many of these were transferred to the Royal Air Force and Royal Navy. Others went to North Africa to the Vichy.

Use in Battle of France

The GB I/62 and GB I/63 were equipped with the Maryland during the Battle of France.

Vichy Use

After the fall of France the 60 Marylands that were left went to the Vichy forces in North Africa and Syria. Some of these were to be later used against the Allies.

United Kingdom

The Royal Air Force (RAF) took over the 50 French Model 167Fs and named them the Maryland Mk I. The United Kingdom ordered 150 / 225 Maryland Mk IIs. 72 of these were sent to the South African Air Force.

Defense of Malta

The No. 431 General Reconnaissance Flight received the first Marylands in October 1940.

Taranto

The Marylands provided the reconnaissance of Taranto Harbor before the Swordfish attacked the Italian Navy.

Bismark and Prinz Eugen

The Fleet Air Arm (FAA) used Marylands for reconnaissance and one of them reported the departure of the Bismark and Prinz Eugen in May 1941 from their port.

Specifications

  Martin 167 Maryland
Martin Maryland
XA-22
Type Light bomber, Reconnaissance bomber
Crew 3
Engine (Type) 2: Pratt & Whitney R-1830-37 Twin Wasp
Cylinders Radial 14
Cooling Air
HP 1,200 each
Propeller blades 3 constant speed
Dimensions  
Span 61' 4"
18.69 m
Length 46' 8"
14.22 m
Height 15'
4.57 m
Wing area 538.5 ft2
Weight  
Empty 11,170 lb
Loaded 16,000 lb
Performance  
Speed @ 5,000' 280 mph
Climb  
Service ceiling 20,000'
Range 600 miles
Armament  
Wings 4: .30 cal MG
Dorsal turret 1: .30 cal MG
Underside 1: .30 cal MG
Nose 1: .30 cal MG
Bombs 1,800 lb
  Marin Maryland Mk I
Type  
Crew  
Engine (Type) 2: Pratt & Whitney R-1830-S1C3-G Twin Wasp
Cylinders Radial 14
Cooling  
HP 1,050 each
Propeller blades 3 each
Dimensions  
Span  
Length  
Height  
Wing area  
Weight  
Empty  
Loaded 15,297 lb
6,939 kg
Performance  
Speed  
Climb  
Service ceiling  
Range  
Armament  
Wings 4: 0.303" MG
Dorsal turret 1: 0.303" MG
Ventral position 1: 0.303" MG
Bombs 1,250 lb
567 kg
  Martin 167 Maryland Mk II
Martin Maryland Mk II
Type Reconnaissance, Bomber
Crew 3
Engine (Type) 2: Pratt & Whitney S3C4-G piston
2: Pratt & Whitney R-1830-S3C4-G Twin Wasp
Cylinders Radial
Cooling  
HP 1,200 each
Propeller blades 3 each
Dimensions  
Span 61' 4"
18.69 m
Length 46' 8"
14.22 m
Height 14' 11.25"
4.55 m
Wing area 538.5 ft2
50.03 m2
Weight  
Empty 11,213 lb
5,086 kg
Loaded 16,809 lb
7,625 kg, 7,631 kg
Performance  
Speed @ 11,800' /
3,595 m
278 mph
448 kph
Speed @ 11,800' /
3,597 m
278 mph
447 kph
Climb 1,790'/minute
545 m/minute, 546 m/minute
Service ceiling 26,000'
7,925 m
Range 1,210 miles
1,947 km
Range with maximum bomb load 1,080 miles
1,738 km
Armament  
Wings 4: 0.303" MG
4: 7.7 mm MG
Dorsal turret 1: 0.303" MG
1: 7.7 mm MG
Ventral position 1: 0.303" MG
1: 7.7 mm MG
Bombs 2,000 lb
901 kg, 907 kg

Sources:

  1. Aircraft of WWII, General Editor: Jim Winchester, 2004
  2. Fighting Aircraft of World War II, Editor: Karen Leverington, 1995
  3. Aircraft of WWII, Stewart Wilson, 1998
  4. American Attack Aircraft Since 1926, E. R. Johnson, 2012
20th Century American Military History Crucial Site