Sikorsky
SH-3/S-61 Seaking

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General Info

Sikorsky
(S-61N Mk II) Seaking


A S-61N Mk.II operating for Sociedad de Salvamento y Seguridad Marítima in Spain
Role	Medium-lift transport / airliner helicopter
Manufacturer	Sikorsky Aircraft
First flight	11 March 1959
Introduction	September 1961
Status	Active service
Primary users	CHC Helicopter Bristow Helicopters AAR Airlift
Number built	119
Developed from	Sikorsky SH-3 Sea King

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History Sikorsky
Sikorsky (S-61N Mk II) Seaking

The Sikorsky S-61L and S-61N are civil variants of the SH-3 Sea King military helicopter. It was developed and produced by the American helicopter manufacturer Sikorsky Aircraft. The commercial version of the Sea King was developed during the late 1950s. Two versions, the land-based S-61L and the amphibious S-61N, were created. The S-61L had an enlarged cabin and dispensed with some of the amphibious features, such as its float stabilizers, for greater payload capacity. It was considered attractive to utility operators, while the amphibious S-61N appealed to off-shore operators. The first models were delivered to customers during September 1961. By the turn of the century, they had become two of the most widely used airliner and oil rig support helicopters built.

n September 1957, Sikorsky was awarded a United States Navy development contract for an amphibious anti-submarine warfare (ASW) helicopter capable of both detecting and attacking submarines. On 11 March 1959, the XHSS-2 Sea King prototype made its maiden flight. Production deliveries of the HSS-2 (later designated SH-3A) commenced during September 1961. The initial production aircraft being powered by a pair of General Electric T58-GE-8B turboshaft engines, each capable of providing up to 930 kW (1,250 shp)

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Sikorsky (S-61N Mk II) Seaking

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Sikorsky (S-61N Mk II) Seaking

General Info

Crew: 2
Capacity: up to 30 passengers
Length: 58 ft 11 in (17.96 m)
Height: 17 ft 6 in (5.33 m)
Empty weight: (5,596 kg)
Gross weight: (7,332 kg)
Max takeoff weight: (8,618 kg)

Powerplant

Powerplant: 2 × General Electric CT58-140 turboshaft engines, 1,500 shp (1,100 kW) each
Main rotor diameter: (19 m)
Main rotor area: (280.5 m²)
Blade section: - NACA 0012)

Specifications

Maximum speed:166 mph, 267 km/h)
Cruise speed: (140 mph, 220 km/h)
Range: 450 nmi (520 mi, 830 km)
Service ceiling: (3,800 m)
Rate of climb: (6.7–11.3 m/s)

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Erickson gives each of its S-64s an individual name, the best-known being "Elvis", used in fighting fires in Australia alongside "The Incredible Hulk" and "Isabelle". Other operators, such as Siller Brothers, have followed with their Sikorsky S-64E, Andy's Pride. The Erickson S-64E nicknamed "Olga" was used to lift the top section of the CN Tower into place in Toronto, Ontario, Canada.[

Sikorsky (S-61N Mk II) Seaking

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he Sikorsky CH-53K King Stallion (Sikorsky S-95) is a heavy-lift cargo helicopter

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Sikorsky
SH-3/S-61 Seaking

Sikorsky
(S-61N Mk II) Seaking

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History Sikorsky
Sikorsky (S-61N Mk II) Seaking

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Sikorsky (S-61N Mk II) Seaking