| Specifications |
| Rotor Diameter |
72 feet |
| Length |
72 feet, 2 inches |
| Height |
17 feet, 1 inches |
| Armament |
|
| Engines |
|
| Cost |
|
|
Max. Engine Rating (each) | 2,100 hp
|
|
Normal Engine Rating (each) | 1,900 hp
|
|
Max. Speed | 130 mph
|
|
Cruising Speed | 115 mph
|
|
Max. Rate-of-Climb | 1,800 ft/min
|
|
Service Ceiling | 8,700 ft
|
|
Fuel Consumption (Cruising) | 200 gal/h
|
|
Range (max. payload) | 145 miles
|
| Weight
| 20,800 lbs
|
| Empty
| 31,000 lbs
|
| Gross
|
|
| Variants |
S-56 - Company Model Designation
S-60 - Proposed heavy-lift skycrane variant; not adopted.
XHR2S-1 - Prototype Model; four completed
HR2S-1 - Initial Production Model; USMC usage; 55 examples.
HR2S-1W - USN Airborne Early Warning (AEW) platform; two examples.
YH-37 - U.S. Army evaluation model based on the HR2S-1; single example.
H-37A - U.A. Army production model; 94 examples
H-37B - Revised H-37A with new cargo door; improved flight qualities and survivability.
CH-37 "Mojave" - Base Series Designation
CH-37A - 1962 redesignation of H-37A model
CH-37B - 1962 redesignation of H-37B model
CH-37C - 1962 redesignation of HR2S-1 model
Westland Westminster - British variant based on the S-56 design.
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