Specifications for the
Focus Model: Martin B-10B
Country of Origin: United States
Manufacturer: Glenn L. Martin Company - USA
Initial Year of Service: 1932
Length: 44.16ft (13.46m)
Width: 70.87ft (21.60m)
Height: 11.58ft (3.53m)
Weight (Empty): 15,895lbs (7,210kg)
Weight (MTOW): 0lbs (0kg)
Powerplant: 2 x Wright R-1820 G-102 Cyclone 9-cylinder radial piston engines.
Maximum Speed: 200mph (322kmh; 174kts)
Maximum Range: 590miles (950km)
Service Ceiling: 25,197ft (7,680m; 4.8miles)
Rate-of-Climb: 0 feet per minute (0m/min)
1 x 7.62mm machine gun in nose position
1 x 7.62mm machine gun in dorsal position
1 x 7.62mm machine gun in ventral position
Maximum bombload of up to 2,260 lbs of internally-held ordnance.
Model 123 - Base Model Project Designation as pursued by Martin.
XB-907 - US Army Evaluation Designation of Model 123.
XB-907A - Modified US Army Evaluation Designation of Model 123.
XB-10 - USAAC Modified Model based on the XB-907A model.
YB-10 - Modified XB-10 models
B-10 - Base Production Model Designation
YB-10A - based on YB-10 model but fitted instead with Wright R-1820-31 radial piston engines.
B-10B - Initial and Main Production Model Designation.
B-10M - Target Tug Conversion Models of B-10B.
YB-12 - Improved B-10 Model fitted with Pratt & Whitney R-1690-11 Hornet radial piston engines.
B-12A - "Improved B-10" Production Model
YB-13 - Proposed Re-engined Variant Model
A-15 - Proposed Attack Model Variant
YO-45 - Experimental Testing Platform
Model 139 - Export Designation for B-10 Model
Model 139WA - Argentina Export Model Designation for demonstration model.
Model 139WAA - Argentina Export Model Designation; fielded with Argentine Army units.
Model 139WAN - Argentine Export Model Designation; fielded with Argentine Naval units.
Model 139WC - Chinese Export Model Designation.
Model 139WH - Netherlands Export Model Designation.
Model 139WS - Soviet Demonstrator Model
Model 139WSM - Siam Export Model Designation
Model 139WSP - Proposed Spanish Export Model
Model 139WT - Turkish Export Model Designation
Argentina, China, Thailand, Turkey, the Netherlands, Philippines, Soviet Union, Indonesia , Thailand (Siam) and the United States of America.