Credit
Sardaka · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified
FORCETALLY
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At a glance
Measured figures
Bell 412EP · including rotors
Single source56 ft 1 in (17.09 m) including rotors[source]
Sea King HAS.5 · Length
Configuration
| Specification | Bell 412 | Westland Sea King |
|---|---|---|
| Type | Multipurpose utility helicopter[source] | Anti-submarine warfare , medium-lift transport and utility helicopter[source] |
| National origin | United States / Canada[source] | United Kingdom[source] |
| Manufacturer | Bell Helicopter[source] | Westland Helicopters[source] |
| Primary users | Japan Ground Self Defence Force See Operators for others[source] |
55 ft 10 in (17.02 m)[source]
Cruise; Bell 412EP · Cruise speed
Single sourceMaximum; Bell 412EP · Maximum speed
Single source140 kn (160 mph, 260 km/h)[source]
122 kn (140 mph, 226 km/h)[source]
Cruise; Sea King HAS.5 · max cruise at sea level
Single source112 kn (129 mph, 207 km/h) (max cruise at sea level)[source]
Bell 412EP · 1 × Pratt & Whitney Canada PT6T-3D Twin-Pac or PT6T-3DF Twin-Pac coupled turboshaft engine - each, 1,250 shp (
Single source1 × Pratt & Whitney Canada PT6T-3D Twin-Pac or PT6T-3DF Twin-Pac coupled turboshaft engine - each, 1,250 shp (930 kW)[source]
Sea King HAS.5 · 2 × Rolls-Royce H.1400-2 Gnome turboshaft engines, 1,660 shp ( ) each
Single source2 × Rolls-Royce H.1400-2 Gnome turboshaft engines, 1,660 shp (1,240 kW) each[source]
Bell 412EP · Service ceiling
Single source20,000 ft (6,100 m)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
Royal Navy (Retired) Royal Air Force (Retired) German Navy (Retired) Indian Navy[source]
| Number built | 1,300+[source] | 344 (Westland Sea King) / 13 (Westland Sea King AEW Mk.2/ASac MK.7 variant)[source] |
|---|
| Manufactured | 1979–present[source] | 1969–1995[source] |
|---|
| Introduction date | 1981 ( 1981 )[source] | — |
|---|
| First flight | August 1979 ( 1979-08 )[source] | Sea King: 7 May 1969 Commando: 26 September 1979[source] |
|---|
| Developed from | Bell 212[source] | Sikorsky SH-3 Sea King[source] |
|---|
| Variant | Bell CH-146 Griffon[source] | — |
|---|
| Capacity | up to 13 passengers, maximum external load of almost 6,614 lb (3,000 kg)[source] | — |
|---|
| Fuselage length | 43 ft (13 m)[source] | — |
|---|
| Blade sections | root: Boeing VR-7; tip: Wortmann FX 71-H-080[source] | — |
|---|
| Main rotor area | 1,662 sq ft (154.4 m 2 )[source] | 3,020 sq ft (281 m 2 )[source] |
|---|
| Power/mass | 0.2663 hp/lb (0.4378 kW/kg)[source] | — |
|---|
| Status | — | Active service[source] |
|---|
| Blade section | — | NACA 0012[source] |
|---|
Maximum take-off; Sea King HAS.5 · Max takeoff weight
Single source