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XPB2M-1 Mars
Photo: USN · Wikimedia Commons · Public domain
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XPB2M-1Mars

Tactical Transports · United States · 1938
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XPB2M-1Mars

XPB2M-1 Mars
XPB2M-1 Mars Photo: USN · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Payload
60
Short / Rough-Field Capability
40
Range
70
Cargo Versatility
55
Reliability
50
Self-Protection
20
Low-Altitude Capability
65
Versatility
50
Technology
45
Cost-Effectiveness
40
Origin United States
CategoryTactical Transports
EraInterwar Period
In service1938–1942
Operators1 countries
Quantity1
Data Quality85%
MASS(Military Archive Scoring System)
51
Tactical Transports MASS Rating
1/11
Interwar Period
168/215
All-Time
Tactical Transports · 10 axes scored
Payload
60
Short / Rough-Field Capability
40
Range
70
Cargo Versatility
55
Reliability
50
Self-Protection
20
Low-Altitude Capability
65
Versatility
50
Technology
45
Cost-Effectiveness
40
ⓘ Regardless of era, the same scoring system applies to all units in the tactical transports category.
01 / Overview
XPB2M-1 Mars
Production
1938–1942
Quantity
1
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TACTICAL TRANSPORTS · INTERWAR PERIOD
1
PERFORMANCE/PRICE
45
UNIT COST (2025 USD)
—
51
tactical transports category
ⓘ Performance/Price and MASS score are computed across all units in the tactical transports category, regardless of era.
02 / Specs & Design
◎General5MOD.5
  • First Flight1942
  • Service Entry Year1943
  • Crew11
  • Primary Rolelong-range patrol flying boat
  • In ServiceYes
◈Powerplant3MOD.3
  • Engine TypeWright R-3350-8 piston engines
  • Number of Engines4
  • Power (each, turboprop)2,400 kW
▣Performance7MOD.7
  • Cruise Speed354 km/h
  • Top Speed380 km/h
  • Service Ceiling4,500 m
  • Maximum Range8,000 km
  • Range with Max Payload5,600 km
  • Takeoff Run1,200 m
  • Unpaved / Short FieldYes
◇Cargo & Capacity5MOD.5
  • Maximum Payload36,000 kg
  • Cargo Hold Volume330
  • Troop Capacity133
  • Paratroop Capacity0
  • Rear Loading RampNo
◆Aerial Refueling2MOD.2
▤Dimensions & Weights5MOD.5
  • Length36 m
  • Wingspan61 m
  • Height11.5 m
  • Empty Weight34,000 kg
  • Max Takeoff Weight74,800 kg
⬢Production3MOD.3
  • Total Built1
  • Operators1
  • Variants5
▲Service History4MOD.4
  • Retirement Year1945
  • Production Start1938
  • Production End1942
  • Operational StatusRetired
03 / History
SERVICE LIFESPANStill in Service
  1. 1938Production started
  2. 1939First deployment: World War II
  3. 1942Production ended
88
years in service
4
years in production
1
units produced
1
countries operating
04 / Variants
▚ WEAPON FAMILY
JRM-1 Mars 1945
JRM-1 Mars 1945
JRM-1 Mars 1945
JRM-1 Mars 1945
JRM-1 Mars 1945
JRM-1 Mars 1945
XPB2M-1 Mars 1938
// SIBLING VARIANTS
JRM-2 Mars 1945
JRM-3 Mars 1945
// DERIVATIVES
JRM-1 Mars 1945
05 / Operators
Operator Countries1country
📖 TERMS ON THIS PAGE1terms
Ability to take off and land on unpaved or short runways.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Tactical Transports entry →