Data Quality84%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the tactical transports category.
01 / Overview
Martin JRM Mars
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TACTICAL TRANSPORTS · WORLD WAR II
10
PERFORMANCE/PRICE
55
UNIT COST (2025 USD)
—
ⓘ 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 Year1944
- Crew7
- Primary Rolecargo transport flying boat
- In ServiceNo
◈Powerplant2MOD.2
- Engine TypeWright R-3350 Duplex-Cyclone
- Number of Engines4
▣Performance7MOD.7
- Cruise Speed305.748 km/h
- Top Speed355.633 km/h
- Service Ceiling4,450.08 m
- Maximum Range4,000 km
- Range with Max Payload3,200 km
- Takeoff Run2,000 m
- Unpaved / Short FieldNo
◇Cargo & Capacity6MOD.6
- Maximum Payload9,072 kg
- Cargo Hold Volume1,200
- Troop Capacity200
- Paratroop Capacity200
- Vehicle Capacitycargo transport, later water bomber
- Rear Loading RampYes
◆Aerial Refueling2MOD.2
▤Dimensions & Weights5MOD.5
- Length35.662 m
- Wingspan60.96 m
- Height11.582 m
- Empty Weight34,279.913 kg
- Max Takeoff Weight40,824 kg
⬢Production3MOD.3
- Total Built7
- Operators1
- Variants5
▲Service History4MOD.4
- Retirement Year1956
- Production Start1945
- Production End1948
- Operational Statusretired
03 / History
SERVICE LIFESPANStill in Service
- 1945Production started
- 1948Production ended
- 1959Sale: Canada (4 units)
81
years in service
3
years in production
7
units produced
1
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
Operator Countries1country
Martin JRM MarsSALES1records
| Year | Buyer | Quantity | Amount | Present Value (2025) |
|---|---|---|---|---|
| 1959 |  Canada | 4 | — | — |
ⓘ "Present Value" is an estimated amount adjusted for inflation.
05 / MASS Score
TACTICAL TRANSPORTS RANKING Tactical Transports · World War II
MASS RANKINGSMASS ↗
144TACTICAL TRANSPORTS10WORLD WAR II · TACTICAL TRANSPORTS1489UNITED STATES · ALL WEAPONS184PERFORMANCE/PRICE · TACTICAL TRANSPORTS
ⓘ Rankings are within theTactical Transportscategory.
📖 TERMS ON THIS PAGE1terms
A hinged rear fuselage section on military transport aircraft that lowers to enable direct loading/unloading of cargo or vehicles from the aircraft's tail.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources