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United States' Martin PBM Mariner flying boat

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Martin PBM Mariner flying boat:
United States' Martin PBM Mariner flying boat
Aeronautics Aircraft Spotters' Handbook
Martin PBM Mariner flying boat:
United States' Martin PBM Mariner flying boat
Aeronautics Aircraft Spotters' Handbook
Martin PBM Mariner flying boat:
United States' Martin PBM Mariner flying boat

Design

The United States Navy in 1937 put forth a request for a new flying boat.1,2

Radar

The radar was located above the cockpit in a streamlined fairing.1

Engines

The PBM's engines were mounted high on the gull wings to help keep them out of the salt water spray.1

Wings

The wings were gull shaped.1,3 There were fixed floats on the ends that allowed for a staple take off in rough seas.1

Tail

The tail plane was dihedral.2 The fins were canted inwards.2

Prototype

Martin made a 3/8 scale model that was flown before the full scale prototype.1,2 It had a Chevrolet engine and a crew.1

The contract for building a full sized prototype was signed on June 30, 1937.3

The Martin XPBM-1 Mariner prototype first flew on February 18, 1939.1,2,3

Production

Deliveries of the PBM-1 began in 1941.2

Production concluded in 1949.1,2

  • Martin XPBM-1: 12
  • Martin PMB-1: 202,3
  • Martin XPBM-2: 12
  • Martin PBM-3: 3793
    • Production: 19423
  • Martin PBM-3B / Martin Mariner GR.I: 322
  • Martin PBM-3C: 2742
  • Martin PBM-3D: 2012
  • Martin PBM-3R: 502
  • Martin PBM-3S: 1562
  • Martin XPBM-5: 22
  • Martin PBM-5: 6312
  • Martin XPBM-5A: 12
  • Martin PBM-5A: 362
  • Total: 1,4052
    • Manufacturer: Glenn L. Martin Company3

Variants

  • Martin XPBM-1: Prototype.2,3 Had Wright R-2600-6 (1,600 HP) engines.2 The outrigger floats were retractable.2 The tail surfaces were flat.2,3
  • Margin XPBM-2: Prototype.3 Was to have catapult equipment and more fuel.3
  • Martin PBM-1: First production model.2 Tail surfaces were changed to a dihedral.3 Went into service in 1941.3
  • Martin PBM-3: Outriggers were fixed.2 Engine nacelles were lengthened.2
  • Martin PBM-3B / Martin Mariner GR.I: Delivered to RAF Coastal Command in August 1943.2
  • Martin PBM-3C: More armor protection.2
  • Martin PBM-3D: Increased armament.2 Self sealing fuel tanks.2 Radar.2
  • Martin PBM-3R: Transport.2 Unarmed.2 Could carry 20 passengers.2
  • Martin PBM-3S: Anti submarine warfare.2
  • Martin PBM-5: Had retractable landing gear in the fuselage.1 Radar equipped.2
  • Martin PBM-5A: Retractable tricycle landing gear.2 Mostly used by United States Coast Guard.2,3
  • Martin PBM-5E: New radar.2
  • Martin PBM-5G: Coast Guard use.2
  • Martin PBM-5S: Anti submarine warfare.2

Usage

The Martin PBM Mariner was a replacement for the Consolidated PBY Catalina.1

During World War II Australia, Britain, and the United States used the Mariner.2 Many countries used the Mariner into the 1950s.1,3

Rocket Assisted Take Off (RATO)

The United States Navy first used RATO on a stranded PBM in the Colorado River.1

United Kingdom

The British returned the 27 Mariners that they had without using them in combat.1 They had them only 6 weeks.2

U-Boat Destroyer

On June 30, 1942 was a PBM Mariners first kill when Lieutenant Richard E. Schreder sank U-158 near Bermuda.1

On August 6, 1943 seven PBMs sank U-615 near Aruba.1

By the end of World War II, PBM Mariners sank twelve U-Boats.1

Australia

In 1943 Australia received 122 PBM-3R transports.2 These were used from Australia to New Guinea from mid 1944.2

Specifications

  Martin PBM Mariner
Type Patrol flying boat2, Transport flying boat2
Crew 7 or 82
Engine (Type)  
Cylinders  
Cooling  
HP  
Propeller blades  
Dimensions  
Span 118'2
35.97 m2
Length 80'2
24.38 m2
Height 27' 6"2
8.38 m2
Wing area  
Weight  
Empty  
Loaded  
Performance  
Speed  
Cruising speed  
Climb  
Service ceiling  
Range  
Combat range  
Armament  
  Martin PBM-3 Mariner
Type Reconnaissance3
Crew 93
Engine (Type) 2: Wright R-2600-12 Cyclone3
Cylinders Radial 143
Cooling Air3
HP 1,600 each4, 1,700 each3
Propeller blades 4 blade metal variable pitch3
Dimensions  
Span 118'3,4
Length 77' 2"4, 80'3
Height 27' 6"3,4
Wing area  
Weight  
Empty  
Loaded 40,000 lb4, 58,000 lb3
Performance  
Speed  
Speed @ 13,000' /
3,962 m
198 mph3
Cruising speed  
Climb  
Service ceiling 16,900'3
Range 2,137 miles3
Cruising range 4,000 miles4
Armament 7: MG3
Bombs 2,000 lb3
  Martin PBM-3B Mariner
Type  
Crew  
Engine (Type) 2: Wright R-2600-12 Cyclone2
Cylinders Radial 142
Cooling  
HP 1,700 each2
Propeller blades 4 each2
Dimensions  
Span  
Length  
Height  
Wing area  
Weight  
Empty  
Loaded  
Performance  
Speed  
Cruising speed  
Climb  
Service ceiling  
Range  
Combat range  
Armament  
  Martin PBM-3C Mariner
Type  
Crew  
Engine (Type) 2: Wright R-2600-12 Cyclone2
Cylinders Radial 142
Cooling  
HP 1,700 each2
Propeller blades 4 each2
Dimensions  
Span  
Length  
Height  
Wing area  
Weight  
Empty 32,378 lb2
14,687 kg2
Loaded 58,000 lb2
26,309 kg2
Performance  
Speed  
Speed @ 13,000' /
3,962 m
198 mph2
319 kph2
Cruising speed  
Climb 410'/minute2
125 m/minute2
Service ceiling 16,900'2
5,151 m2
Range 2,137 miles2
3,439 km2
Combat range  
Armament  
Nose turret 2: 0.5" MG2
Dorsal turret 2: 0.5" MG2
Waist positions 2: 0.5" MG2
Tail turret 2: 0.5" MG2
Bombs or depth charges 2,000 lb2
907 kg2
  Martin PBM-3D Mariner
Type Flying boat1
Crew 7 or 81
Engine (Type) 2: Wright R-2600-22 Cyclone piston1,2
Cylinders Radial1
Cooling  
HP 1,900 each1,2
Propeller blades 4 each1,2
Dimensions  
Span 118'1
35.97 m1
Length 80'1
24.38 m1
Height 27'1
8.23 m1
Wing area 1,407 ft2 1
130.71 m2 1
Weight  
Empty 33,106 lb1
15,017 kg1
Loaded 57,878 lb1
26,253 kg1
Performance  
Speed 211 mph2
340 kph2
Speed @ 1,700' /
520 m
210 mph1
338 kph1
Cruising speed @ 1,700' /
520 m
188 mph1
303 kph1
Climb  
Service ceiling 19,800'2, 20,000'1
6,035 m2, 6,095 m1
Range 2,235 miles1, 2,240 miles2
3,597 km1, 3,605 km2
Combat range 722 miles1
1,162 km1
Armament  
Nose turret 2: 12.7 mm MG1
Dorsal turret 2: 12.7 mm MG1
Waist positions 2: 12.7 mm MG1
Tail turret 2: 12.7 mm MG1
Bombs, torpedoes, or depth charges
under the engine nacelles
1,646 lb1, 8,000 lb2
3,629 kg2
  Martin PBM-5 Mariner
Type  
Crew  
Engine (Type) 2: Wright R-2600-342
Cylinders  
Cooling  
HP 2,100 each2,3
Propeller blades 4 each2
Dimensions  
Span  
Length  
Height  
Wing area  
Weight  
Empty  
Loaded  
Performance  
Speed  
Cruising speed  
Climb  
Service ceiling  
Range  
Combat range  
Armament  

Sources:

  1. Aircraft of WWII, General Editor: Jim Winchester, 2004
  2. Aircraft of WWII, Stewart Wilson, 1998
  3. World War II Airplanes Volume 2, Enzo Angelucci, Paolo Matricardi, 1976
  4. Aeronautics Aircraft Spotters' Handbook, Ensign L. C. Guthman, 1943
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