Data Quality88%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the utility / transport helicopters category.
01 / Overview
Wessex
Category
Country
Production
1961–1970
Quantity
382
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
UTILITY / TRANSPORT HELICOPTERS · EARLY COLD WAR
3
PERFORMANCE/PRICE
90
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the utility / transport helicopters category, regardless of era.
02 / Specs & Design
◎General6MOD.6
- First Flight1958
- Service Entry Year1961
- Crew2
- Passengers16
- Primary RoleUtility transport, anti-submarine warfare, search and rescue
- In ServiceYes
◈Powerplant8MOD.8
- Engine Typede Havilland Gnome H.1200 Mk.110/111
- Number of Engines2
- Engine Power (each)1,007 kW
- Transmission Rating1,500 kW
- Rotor ConfigurationSingle main rotor, tail rotor
- Main Rotor Diameter17.07 m
- Main Rotor Blades4
- Anti-Torque TypeTail rotor
▣Performance10MOD.10
- Top Speed212.414 km/h
- Cruise Speed196.322 km/h
- Never-Exceed Speed (VNE)212 km/h
- Service Ceiling3,720 m
- Hover Ceiling (IGE)2,440 m
- Hover Ceiling (OGE)1,830 m
- Range770 km
- Ferry Range1,000 km
- Rate of Climb7.5 m/s
- Endurance150
◇Dimensions & Weights7MOD.7
- Fuselage Length0.254 m
- Height0.254 m
- Rotor Disc Area228.1
- Empty Weight3,520 kg
- Max Takeoff Weight6,123 kg
- Useful Load2,603 kg
- Cabin Volume5.66
◆Armament & Mission5MOD.5
- Hardpoints0
- Weapons Payload1,814 kg
- GunNone
- Sling Load Capacity1,814 kg
- Rescue HoistYes
▤Avionics2MOD.2
⬢Production2MOD.2
- Total Built382
- Variants13
▲Service History4MOD.4
- Retirement Year2003
- Production Start1958
- Production End1970
- Operational StatusRetired from British service in 2003
03 / History
SERVICE LIFESPANStill in Service
- 1961Production started
- 1970Production ended
65
years in service
9
years in production
382
units produced
7
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
Operator Countries7country
05 / MASS Score
UTILITY / TRANSPORT HELICOPTERS RANKING Utility / Transport Helicopters · Early Cold War
MASS RANKINGSMASS ↗
52UTILITY / TRANSPORT HELICOPTERS3EARLY COLD WAR · UTILITY / TRANSPORT HELICOPTERS103UNITED KINGDOM · ALL WEAPONS39PERFORMANCE/PRICE · UTILITY / TRANSPORT HELICOPTERS
ⓘ Rankings are within theUtility / Transport Helicopterscategory.
📖 TERMS ON THIS PAGE2terms
Autopilot/AFCS (Automatic Flight Control System) is an avionics suite that automatically controls a helicopter’s attitude, navigation and flight path, providing stability augmentation and reducing pilot workload.
A mechanical device used to lift personnel or cargo via a cable, typically mounted on helicopters for rescue or recovery operations.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources