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JRM-2 Mars
Photo: USN · Wikimedia Commons · Public domain
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JRM-2Mars

Tactical Transports · United States · 1945
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JRM-2Mars

JRM-2 Mars
JRM-2 Mars Photo: USN · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Payload
75
Short / Rough-Field Capability
60
Range
80
Cargo Versatility
70
Reliability
65
Self-Protection
20
Low-Altitude Capability
70
Versatility
50
Technology
55
Cost-Effectiveness
40
Origin United States
CategoryTactical Transports
EraWorld War II
In service1945–1948
Operators1 countries
Quantity1
Data Quality84%
MASS(Military Archive Scoring System)
62
Tactical Transports MASS Rating
3/26
World War II
113/215
All-Time
Tactical Transports · 10 axes scored
Payload
75
Short / Rough-Field Capability
60
Range
80
Cargo Versatility
70
Reliability
65
Self-Protection
20
Low-Altitude Capability
70
Versatility
50
Technology
55
Cost-Effectiveness
40
ⓘ Regardless of era, the same scoring system applies to all units in the tactical transports category.
01 / Overview
JRM-2 Mars
Production
1945–1948
Quantity
1
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TACTICAL TRANSPORTS · WORLD WAR II
3
PERFORMANCE/PRICE
45
UNIT COST (2025 USD)
—
62
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
  • Crew4
  • Primary Rolelong-range transport flying boat
  • In ServiceNo
◈Powerplant3MOD.3
  • Engine TypePratt & Whitney R-4360 Wasp Major
  • Number of Engines4
  • Power (each, turboprop)3,000 kW
▣Performance7MOD.7
  • Cruise Speed352 km/h
  • Top Speed390 km/h
  • Service Ceiling4,500 m
  • Maximum Range8,000 km
  • Range with Max Payload5,600 km
  • Takeoff Run1,200 m
  • Unpaved / Short FieldYes
◇Cargo & Capacity4MOD.4
◆Aerial Refueling2MOD.2
▤Dimensions & Weights5MOD.5
  • Length36 m
  • Wingspan61 m
  • Height12 m
  • Empty Weight34,000 kg
  • Max Takeoff Weight75,000 kg
⬢Production3MOD.3
  • Total Built1
  • Operators1
  • Variants1
▲Service History4MOD.4
  • Retirement Year1956
  • Production Start1945
  • Production End1948
  • Operational StatusRetired
03 / History
SERVICE LIFESPANRetired
  1. 1942Entered service
  2. 1945Production started
  3. 1948Production ended
81
years in service
3
years in production
1
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 1 countries retired it.
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
JRM-2 Mars 1945
// SIBLING VARIANTS
JRM-3 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 →