SH-2G Super Seasprite Anti-Submarine Helicopter, Australia

The SH-2G Super Seasprite, manufactured by Kaman Aerospace, was the US Navy’s front-line intermediate-weight helicopter. A total of 16 SH-2G helicopters were operational in two US Navy squadrons, HSL-94 and HSL-84. First flight of the SH-2G was in 1985 and it entered service with the US Navy in 1993. The SH-2G Super Seasprite was retired from service with the US Navy Air Reserve in May 2001.

4572908252_f2f277e1cc_z.jpgSH-2G Super Seasprite – A nicely-preserved example of a Kaman SH-2G Super Seasprite – Image @Andrew Chorney on

The Super Seasprite SH-2G can be equipped for anti-submarine warfare (ASW), anti-surface warfare (ASuW), over-the-horizon-targeting airborne mine countermeasures (AMCM), surveillance, search and rescue (SAR) and covert operations.

In November 2014, Kaman signed a contract with General Dynamics Canada to remanufacture and modernise four SH-2G helicopters for the Peruvian Navy. The contractual scope also includes operational support for the fifth SH-2G helicopter.


cockpit_front_panelOriginal cockpit layout – Image

The SH-2G has a three-man crew: two pilots and a sensor operator (SENSO). However, it can also be flown by a single pilot and SENSO, due to the flexible integrated tactical avionics system (ITAS) designed by Kaman and Northrop Grumman (formerly Litton) Guidance & Controls. ITAS is driven by dual mission data processors and uses two dual 1553B databuses to integrate sensors, weapons, communications and navigation equipment.

SH2-GAFMFSCockpitUpgraded glass cockpit – Image

The glass cockpit has four-colour multifunction displays and new centre console, which has two smart display units to simplify data entry by the pilot and the SENSO.

“The SH-2G Super Seasprite has a three-man crew of two pilots and a SENSO.”

SH-2G weapons

The SH-2G can be armed with Raytheon AGM-65 Maverick infrared imaging or TV-guided, Penguin infrared imaging, radar-guided Improved Sea Skua and laser-designated Hellfire missiles.

Raytheon AGM-65 Maverick

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The AGM-65 Maverick is a tactical, air-to-surface guided missile designed for close air support, interdiction and defense suppression mission. It provides stand-off capability and high probability of strike against a wide range of tactical targets, including armor, air defenses, ships, transportation equipment and fuel storage facilities. Maverick was used during Operation Desert Storm and, according to the Air Force, hit 85 percent of its targets.

The Maverick has a cylindrical body, and either a rounded glass nose for electro-optical imaging, or a zinc sulfide nose for imaging infrared. It has long-chord delta wings and tail control surfaces mounted close to the trailing edge of the wing of the aircraft using it. The warhead is in the missile’s center section. A cone-shaped warhead, one of two types carried by the Maverick missile, is fired by a contact fuse in the nose. The other is a delayed-fuse penetrator, a heavyweight warhead that penetrates the target with its kinetic energy before firing. The latter is very effective against large, hard targets. The propulsion system for both types is a solid-rocket motor behind the warhead.

911176AGM_65_1.jpgAGM-65 Maverick infrared imaging and TV-guided


Penguin anti-ship missile


The Penguin is a helicopter launched anti-ship missile developed for use on Lamps III helicopters and NATO allies. Penguin is the only operational Navy helicopter-launched missile in the Navy’s weapon inventory. It provides Navy surface combatants with a defense against surface threats armed with antiship missiles.

The PENGUIN missile is a short-to-medium range inertially guided missile with infrared (IR) terminal homing. The missile consists of a seeker, navigation and control section, warhead,rocket motor, four folding wings and four canards. It is capable of gravity drop launches at low speeds and altitudes. Ships and surfaced submarines are the missiles primary targets. A principal operational advantage of Penguin is its relatively long operational range, which permits a helicopter armed with Penguin to remain outside the launch envelopes of potential targets. The Penguin missile has an indirect flight path to target. It is also operated in “fire-and-forget” mode to allow multiple target aqusition. ThePenguin is fired from a launcher or a stage weighing approximately 1100 pounds (500 kilograms).


Primary Function Helicopter launched anti-ship missile.
Contractor Kongsberg Vaapenfabrikk (Norway)
Power Plant Solid propellant rocket motor and solid propellant booster
Length 120.48 inches (3.06 meters)
Launch Weight 847 pounds (385 kilograms)
Diameter 11.2 inches (28.45 centimeters)
Wing Span 30 in’s folded, 55 in’s Deployed
Range 25 nautical miles / 35 km
Speed 1.2 Mach maximum
Guidance Inertial and infrared terminal.
Warhead 265 lbs gross, 110 lbs High Explosive, semi armor piercing
derivative of the Bullpup missile
Date Deployed Fourth quarter 1993


Kaman_SH-2G_Super_Seasprite-1.jpgSH-2G armed with PENGUIN missile – Image

Sea Skua anti-surface missile


The Sea Skua anti-surface missile was launched 12 times during the Gulf War – and registered 12 hits. Able to fire the Sea Skua, which was so successful during the Gulf war, the Lynx forms an integral part of the ships detection and weapon system and can project the influence of a ship over great distances with the key element of surprise. In addition to the Sea Skua the Lynx has the Sting Ray torpedo and the older technology but nevertheless most effective depth charge for anti-submarine warfare. The UK Ministry of Defence has problems maintaining three types of naval missile made by British Aerospace (BAe), the Sea Dart area air defence weapon, the Seawolf point defence missile and the helicopter-launched Sea Skua light anti-ship missile. These missiles all have problems with ageing components.

Contractor British Aerospace
Year 1982
Type helicopter-launched anti-ship missile
Wingspan 0.72 m
Length 2.5 m
Diameter 0.25 m
Launch weight 145 kg
Max. speed 1050 km/h
Minimum range 2 km
Maximum range 25 km
Propulsion solid propellant rocket motor booster and sustainer
Guidance I-band semi-active radar guidance
Warhead delayed impact-fuzed high-explosive armored, 28 kg
Service Great Britain, Germany, India, Turkey.


seaskuacorte.jpgSimplified internal cutting Sea Skua. 1 fixed -barbatanas; 2 – hood; 3 – gyros; 4 – electronics; 5 – warhead; 6 – radome; 7 – radar antenna; 8 – electronic radar; 9 – movable wings; 10 – thermal battery;11 – radar altimeter; 12 – support engine; 13 – acceleration engine. Source


20090810104346 (1).jpg

The Hellfire Air-to-Ground Missile System (AGMS) provides heavy anti-armor capability for attack helicopters. The first three generations of HELLFIRE missiles use a laser seeker. The fourth generation, Longbow HELLFIRE, uses a radar frequency seeker.


Hellfire II is the latest production version of the Laser Hellfire missile. Hellfire II and Longbow Hellfire missiles are complementary. The combination of Hellfire II’s precision guidance and Longbow Hellfire’s fire-and-forget capability will provide the battlefield commander flexibility across a wide range of mission scenarios, permitting fast battlefield response and high mobility not afforded by other anti-armor weapons. Source

The SH-2G is cleared for MK-44, MK-46 and MK-50 torpedoes, and is compatible with a wide range of European ASW weapons.


MK-44, MK-46 and MK-50 torpedoes


The Mk-44 torpedo is an active homing torpedo using a salt water-activated electric battery. Mk-44 Mod0 is lauched from helicopters and fixed-wing aircraft. Once in the water, the torpedo begins a spiral search pattern for target acquisition. The Mod1/2 are launched from surface combatants, thus is programed to weave away from its lauch ship and begin spiralling a safe distance away. Although widely used aroung the world, it has been withdrawn from service in the US Navy. The MK 44 was the warhead of the UUM-44A SUBROC anti-submarine missile, withdrawn from service in 1990, which could also carry the MK 46 torpedo. Source


The MK-50 is an advanced lightweight torpedo for use against the faster, deeper-diving and more sophisticated submarines. The MK-50 can be launched from all ASW aircraft, and from torpedo tubes aboard surface combatant ships.

The MK 50 torpedo was developed as the next generation lightweight torpedo to gradually replace the existing MK 46 torpedo as the Navy’s primary ASW weapon for aircraft (fixed wing and helicopters) and surface ships. It was intended to produce a significantly improved capability against some nuclear submarines. It has since been modified by Block Upgrade I. The MK 50 torpedo with Block Upgrade I is intended to be a contributor to precision engagement as well as full-dimensional protection. It provides the Task Force commander with an air or surface ship launched anti-submarine weapon for force protection. The MK 50 torpedo is intended to be an enabler when used to clear hostile waters of submarines, allowing amphibious forces freedom of operation. Tactically, since it is a “fire and forget” weapon, it allows the launch platform to maneuver freely following attack.


The torpedo is slightly over 111 inches long, with a diameter of 12.75 inches and weight of about 775 lbs. A sonar transducer is mounted in the torpedo nose. Torpedo operation is defined by the software associated with the Command and Control Section (CCS). The torpedo uses a closed cycle chemical reaction propulsion system. The MK 50 system includes the torpedo, ancillary support equipment, workshop test and handling equipment, and logistics support facilities. Warshot and exercise versions of the torpedo are intended to be deployed from land based patrol aircraft (P-3), ASW carrier-based aircraft (S-3), ASW helicopters (SH-2, SH-3, SH-60) and ASW surface vessel torpedo tubes. Source

The Royal New Zealand Navy’s SH-2Gs have been fitted with the Fabrique Nationale (FN) MAG-58M 7.62mm machine gun as an urgent operational requirement. First operational deployment with the gun was in May 2008.

Fabrique Nationale (FN) MAG-58M 7.62mm machine gun


Technical data:
  MAG 58M Machine gun
Overall 1,080 mm – 42.5 in
Barrel (chrome plated + stellite) 548 mm – 21.6 in
Rifled lenght of the barrel 487.5 mm – 19.2 in
Machine gun, complete 11.650 kg – 25.7 lb
Barrel 3 kg – 6.6 lb
RATE OF FIRING 650 to 1,000 rpm
Cartridge cases downward
Links laterally
M19A1 BG 250 rds
M61A1 BG 250 rds
M75A1 BG 230 rds
  LPH Pintle Head
Width 310 mm – 12.2 in
Height 600 mm – 23.6 in
Weight, empty 7.3 kg – 16.1 lb


Seasprite-4.jpgNavy, Devonport; Safety and Readiness Checks were performed on the crew of HMNZS Wellington to ensure the ship is safe to proceed on its next phase of operations. A Winchex using a Seasprite helicopter was one of the many exercises evaluated on the day – Image

Super Seasprite countermeasures

The SH-2G (A) for Australia has Northrop Grumman AN/ALR-93 electronic protection measures, ATK AN/AAR-47 missile warning system, BAE Systems North America (formerly Sanders) AN/ALQ-144 infrared jammers and twin BAE Systems Integrated Defense Solutions (formerly Tracor) AN/ALE-39 flare and chaff dispensers. The SH-2G’s for New Zealand are fitted with Northrop Grumman LR-100 ESM.

AN/ALR-93 electronic protection measures


Receiver RWR, AN / ALR-93 (V) 1

A key component is the radar receiver alert (RWR) AN / ALR-93 (V) 1 manufactured by Northrop Grumman which allows not only to detect when the aircraft is being illuminated by a hostile radar, indicating the path and source of enemy missiles to enable his escape, but is also able to work together with other electronic warfare equipment, automatically switching on the electronic disturbing or shooting cartridges chaff and flares.
the aN / ALR-93 uses a robust architecture composed of a triple receptor which offers great performance in a compact, lightweight system of low power consumption. It covers the C / J bands detecting any RF signal within that range a percentage of probability of close detection of 100% even in very dense areas in RF signals.
The software AN / ALR-93 (V) 1 is stored in an EEPROM memory which allows locally modify both the operational program as the “library emissions” allowing adapt to new threats that could be exposed the plane and its pilot.

Technical Data Receiver RWR, AN / ALR-93 (V) 1

MANUFACTURER: Northrop Grumman
FREQUENCY: Bands C / D, E to J
EMISSIONS DETECTABLE: Signs pulse, continuous wave (CW), pulsed doppler
MODE ALERT: Visual and sound
PRE-PROCESSOR: Fully programmable
sOFTWARE: Language C stored in an EEPROM
MAINTENANCE: Fully locally including software and hardware
WEIGHT: 27 Kg.
POWER: 198 W
MTBF: 742 hours
Disturbing ECM, aN / ALQ-126B


ATK AN/AAR-47 missile warning system

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The AN/AAR 47 basically works with an digitized and integrated warning system that is in turn integrated to the communication module of the pilot or the control command of the platform. The AN/AAR 47 is an radar based warning system.

The main feature of this system is to provide timely warning against Infrared MAN Portable Air Defence System (MANPADS). Detecting a MANPADS is an extremely demanding task and these MANPADS do not signal their presence till the launch of the missile, they do have a detectable radiation since they do not rely on active IR, radar guidance or a laser designator. These fire-and-forget systems and lock on and engage a target, speed to the target and destroy it in seconds. But these systems however, have a very small but still visible radar signature and also since propelled by propellant a IR signature. But this signature can be visible only for a very short period of duration. To counter these missiles if the old counter measures are to be used they may be hampered by the decisions of a pilot. But if the counter measures are integrated with the MAWS the system automatically deploys the flares without any delay thereby saving the platform from a possible attack.

aar-47AAR-47 Optical Sensor Converters (OSC) –

The AAR-47 missile warning system consists of 4 Optical Sensor Converters (OSC), a Computer Processor and a Control Indicator. A single optical sensor converter is positioned towards each side of the aircraft and is integrated with an infrared camera which can detect any incoming missiles. With the space on a aircraft being very limited the whole size of the component has to be extremely compact and yet powerful the AAR-47 is a very compact system and is around 32 pounds and takes very negligible space on board a aircraft. Source

AN/ALQ-144 infrared jammers


The AN/ALQ-144 Infrared Countermeasures Set uses active, multi-threat jamming capability, providing battle-proven protection for rotary-wing aircraft.

The AN/ALQ-144 IR Countermeasures Set is an always-on infrared jammer, providing protection against infrared missiles over a wide environmental range. The system is extremely flexible, as it offers multiple configurations to complement small-to medium- signature helicopters. It may operate independently or cohesively with a missile warning system and flares. Source

AN/ALE-39 flare and chaff dispensers


The dispenser countermeasures AN / ALE-39 system is capable of launching up to 60 cartridges flares (flares) or sheet metal (chaff) able to confuse and divert enemy missiles, both infrared and radar guide, which are threatening the plane.In the Fightinghawk and other Skyhawks, CMDS dispensers are found in the lower part of the tail section.

Northrop Grumman LR-100 ESM (SH-2G’s for New Zealand)

hero_LR-10091.jpgThe LR-100 is a combat-proven, affordable, high-performance radar warning receiver (RWR) / electronic support measures (ESM) / electronic intelligence (ELINT) receiver system – all in one compact, lightweight package.

The system’s small footprint and 73-pound weight make it ideally suited for installation on virtually any air, sea, or land-based platform, including lightweight unmanned air vehicles (UAVs).

Demonstrated benefits

  • Real-time electronic order of battle surveillance and ESM reporting
  • Radar warning and display
  • Accurate signal characterization for ELINT support
  • Multiple interfaces (RS-232, RS-422, MIL-STD-1553, and ethernet)
  • Proven electromagnetic compatibility and electromagnetic compatibility with blanking provisions for on-board radars
  • In-flight reprogrammability for changing mission requirements
  • Windows™ based programming and analysis tools
  • 1,500 hour mean-time-between-failure rate

In Production and Available for U.S. Department of Defense International Sales

LR-100 systems are currently in production for the Global Hawk UAV, the Kaman Aerospace SH-2G Super SeaSprite helicopter, the Sikorsky S-70B Naval Seahawk helicopter and Special Operations aircraft submarines and patrol boats. In addition, the system has been successfully installed and/or validated on the P-3 Orion, Hunter UAV, the ASCIET Aerostat, the Predator UAV and the US Navy C-28 aircraft. Source



The Northrop Grumman LN-66HP multimode radar provides the helicopter with ASW, ASuW and anti-ship surveillance and targeting (ASST) capabilities. Alternative multi-mode radar fits available include Northrop Grumman LN-66 HP Enhanced, BAE Systems Seaspray and Telephonics APS-143 advanced search radar. Chosen by New Zealand, the APS-143 has an optional inverse synthetic aperture (ISAR) mode.

BAE Systems Seaspray and Telephonics APS-143 advanced search radar -see below for radar details

The Raytheon AN/AAQ-16 FLIR (forward-looking infrared) is available with a laser designator. The SH-2Gs for New Zealand are fitted with a FLIR Systems AN/AAQ-22 thermal imager.

AN/AAQ-22 thermal imager (Star SAFIRE HD)


The Star SAFIRE HD system uses a 1,500 mm focal length for mid-wave IR and coaxial “two-in-one” telescope for the visible wavelengths sensors. The system facilitates high precision geo-pointing, directing the payload to look at exact geographic coordinates. Feeds from multiple sensors can be fused into a single image, to obtain optimal contrast and presentation of hidden details, generating up to x3 more information compared to conventional NTSC systems. Multiple video feeds from the different sensors can be transmitted simultaneously over a single datalink for further processing, storage and display. The system carries both wide-area and narrow-beam covert laser illuminators to support covert scene illumination and target pointing. Source

Star SAFIRE HD Features

  • Second generation full-HD
  • High definition color in low light
  • 120x zoom ratio
  • Advanced programmable hardware
  • HD-SDI digital output
  • Enhanced standard definition video
  • Optimized usability
  • Multiple laser payloads
  • Maintain Star SAFIRE family compatibility
  • Commercially developed, MIL qualified


The SH-2 Seasprite helicopter relays acoustic data from sonobuoys back to the host ship for processing via AKT-22 datalink. On the SH-2G, an autonomous submarine hunting capability has been introduced using computing devices, such as the UYS-503 onboard acoustic processor, to analyse returns from its own buoys.

The Northrop Grumman ASN-150 tactical navigation (TACNAV) system displays a refined tactical plot and downlinks the picture to its own ship or other ASW platforms.

For the Egyptian requirement, the SH-2G (E) is equipped with L-3 Communications AN/AQS-18A active dipping sonar and digital hover coupler.

L-3 Communications AN/AQS-18A active dipping sonar


The AQS-18A is a midfrequency helicopter dipping sonar system designed for active, long-range search, localization and attack of submarines in both shallow and deep water environments. The sonar detects and maintains contact with underwater targets through a transducer lowered into the water from a hovering helicopter. Active echoranging determines the bearing, range and opening or closing rate of the target relative to the position of the helicopter.

The lightweight AQS-18A dipping sonar features long pulses, high source levels, FM capability, 16-beam signal processing, and a 20 nautical mile coverage range. The AQS-18A system is fully compatible with MIL-STD-1553B databus architectures to facilitate integration with aircraft subsystems and components. Interfaces are also provided to accept input data and provide graphic and data outputs to a sonics data recorder, as well as video for sensor data display.

The AQS-18A wet end consists of a small high-density transducer assembly, a 440 m cable and compatible reeling machine and dome control. The dry end consists of the sonar interface unit, cable interface power supply and sonar control unit. The sonar interface unit has powerful signal processing algorithms specifically designed for increased pulse lengths and spare processing space for additional processing features such as computer-aided detection and classification, multi-sensor target fusion, embedded training and performance prediction (based on environmental data collected during past or current missions). The sonar control unit provides simple interface menus for operator command and control of the sonar system.

Optional dry-end subsystems include cable payout indicator, bearing-range indicator and multifunction display


Operating depth: 440 m (1444 ft)

Operating frequencies: CW 9.23, 10.003, 10.774 kHz; FMlo 9.485 kHz, FMhi 10.520 kHz

Sound pressure level: 217 dB/µPa/yd

Range scales: 1, 1.5, 2.5, 5, 7.5, 10, 12.5, 15, 20 nm

Operational modes: Active 3.5, 35 ms rectangular; 0.2, 0.8, 1.6, 3.2, 4 s shaped: 0.625 s FM; passive; UQC

Weight: 88.9 kg (transducer assembly); 122.7 kg (dome control, reeling machine, cable and reel); 51.8 kg (sonar interface unit, cable interface power supply and sonar control unit); 264 kg (total)

Optional components: Range, range rate, bearing, operator verification



Magic lantern airborne laser mine detection system

The SH-2G Super Seasprite was the first helicopter qualified with the Kaman Magic Lantern airborne laser mine detection system. In 1996, the US Navy took delivery of the Kaman Magic Lantern laser mine detection system, which was fitted on the Super Seasprite for airborne mine countermeasures (AMCM) missions.

Magic Lantern pod

sprite9Magic Lantern, an airborne laser-based mine countermeasures system developed by Kaman Aerospace aboard a US Navy SH-2G Super Seasprite. – Image

The Magic Lantern pod uses a blue-green laser and charge-coupled device (CCD) cameras to sweep the ocean from the surface to below the keel depth of warships. Magic Lantern provides mine classification symbology and video imagery on the existing ASN-1 50 displays.


helicopter_04_3_sh-2g_seaspriteSH-2G helicopter 04 3 sh-2g seasprite – Image @Ulrich on vacation – 2002-2014

SH-2G is fitted with General Electric T700-GE-401 engines. The T700-401 is rated 1,412shp. Second-generation composite main rotor blades (CMRB2) have been fitted on the Super Seasprite, which incorporate filament-wound, S-glass spars, glass skins, aramid honeycomb cores and aramid trailing edges.

General Electric T700-GE-401 engine


  • Type: Dual spool, free shaft turboshaft
  • Inlet: Axial with integral active particle separator system
  • Compressor: Mixed flow; five stage axial, single stage centrifugal
  • Burner: Annular, through flow
  • Turbine: Dual spool, two stage axial gas producer turbine, two stage power turbine
  • Exhaust: Rearward axial flow, single exit exhaust outlet
  • Power Rating: 1,700 shaft horsepower at 24,000 rpm
  • Rated Torque Output: 372 lb/ft @ 24,000 rpm
  • Peak Torque: 695 lb/ft @ 1,000 rpm
  • Weight: 450 lbs.
  • Power/weight: 3.7:1
  • Compression Ratio: 18:1
  • Specific Fuel Consumption: .45 lb/shp/hr

Engine date

SH-2G performance

The SH-2G can climb at the rate of 10.51m/s. The maximum and cruise speed of the aircraft are 277km/h and 222km/h respectively. The range is 1,000km and service ceiling is 6,217m. It can loiter in air for a maximum of 5.3h.

Super Seasprite helicopter orders and deliveries

In 1997, The Australian Navy ordered 11 aircraft for Anzac Class frigates under a A$667m contract. Deliveries began in January 2001 and ten were delivered by February 2007. The Australian SH-2G (A) is fitted with the Northrop Grumman ITAS digital automatic flight control system and Penguin missile.

Royal Australian Navy SH-2G (A)

Anti-submarine/ Anti-surface/ Search and Rescue
Kaman Aerospace
Number Ordered
First Delivered
October 2003
16 m
4.09 m
Weights 6440 kg
Dimensions Rotor Diameter: 13.41 m
Speed 280 kph
830 km
Engines 2 GE-T700-401 gas turbine engines
  • Maximum Rate of Climb: 631 m/s
  • Maximum height: 3000 m
Missiles: 2 Kongsberg AGM119 Mk2 Mod 7 “Penguin” (Anti-ship), Torpedos: 2 Raytheon MK46, Depth Charges: 2 MK11, Guns: 1 MAG58, 7.62 mm GSMG


The Australian Super Seasprite will operate from the Royal Australian Navy’s eight ANZAC-class frigates and has the capability to also operate from other frigates and air-capable support ships. The SH-2G(A)’s primary role is to function as a force multiplier and increase a ship’s effectiveness by significantly expanding surveillance capability, providing over-the-horizon warning, targeting and engagement of potential threats, and contributing to the ship’s combat capabilities.

ANZAC-class frigate


Country of origin Australia
Entered service 1996
Crew 163 men
Sea endurance at least 30 days
Dimensions and displacement
Length 118 m
Beam 14.8 m
Draught 4.35 m
Displacement, standard 3 000 t (?)
Displacement, full load 3 600 t
Propulsion and speed
Speed 27 knots
Range 6 000 nm at 18 knots
Propulsion Combined diesel or gas propulsion, with up to 39 000 shp driving 2 shafts
Helicopters 1 x SH-60 Seahawk or SH-2G Super Seasprite
Artillery 1 x 127-mm dual-purpose dun, 1 x 20-mm CIWS, or 2 x 12.7-mm machine guns (see text)
Missiles 1 x 8-cell Mk.41 Mod 2 VLS launcher for Sea Ceptor SAMs, 2 x 4-cell Mk.141 launchers of t RGM-84 Harpoon AShMs
Torpedoes 2 x Mk.32 3-tube launchers for 354 mm torpedoes

ANZAC-class frigate specification

In addition, the aircraft will be capable of conducting anti-surface and anti-submarine warfare, search-and-rescue missions, medical evacuations and utility roles. Key systems included in the SH-2G(A) are the Telephonics APS 143B(V)3 radar with ISAR capability, the Raytheon AAQ-27 (3FOV) FLIR, the Elisra AES-210 Electronics Support Measure suite, and a Link 11 system being developed by Litton. Weapons include the Kongsberg Penguin missile and the Raytheon MK-46 torpedo.

Telephonics APS 143B(V)3 radar


Most advanced model incorporating features taken from the Telephonics AN/APS-147 radar developed for the MH-60R. Modes include include track-while-scan, ISAR, Stripmap SAR, Spotlight SAR, oil slick detection and 200 target tracking. The AN/APS-143B(V)3 was selected for the SH-2G Seasprite, CP-140 Aurora, S-70C(M)1, NH90 and CH-148 Cyclone. Source

Elisra AES-210 Electronics Support Measure suite


EMERALD (AES-210) – A fully-featured ESM/ELINT system installable on a variety of platforms of modern forces, EMERALD ensures mission-readiness in the most challenging scenarios, including: surveillance, information-gathering, geolocation, enemy radars targeting and platform self-protection. Source

Raytheon MK-46 torpedo


Torpedoes are self-propelled guided projectiles that operate underwater and are designed to detonate on contact or in proximity to a target. They may be launched from submarines, surface ships, helicopters and fixed-wing aircraft. They are also used as parts of other weapons; the Mark 46 torpedo becomes the warhead section of the ASROC (Anti-Submarine ROCket) and the Captor mine uses a submerged sensor platform that releases a torpedo when a hostile contact is detected. The three major torpedoes in the Navy inventory are the Mark 48 heavyweight torpedo, the Mark 46 lightweight and the Mark 50 advanced lightweight.

The MK-46 torpedo is designed to attack high performance submarines, and is presently identified as the NATO standard. The MK-46 torpedo is designed to be launched from surface combatant torpedo tubes, ASROC missiles and fixed and rotary wing aircraft. In 1989, a major upgrade program began to enhance the performance of the MK-46 Mod 5 in shallow water. Weapons incorporating these improvements are identified as Mod 5A and Mod 5A(S).

Power Plant Two-speed, reciprocating external combustion;
Mono-propellant (Otto fuel II) fueled
Length 102.36 in. tube launch configuration (from ship)
Weight 517.65 lbs (warshot configuration)
Diameter 12.75 inches
Range Officially “8,000 yards”
Reportedly 11,400 – 12,000 yd. at 45 kt.
Weapon acquisition range 1600 yards
Min/Max ASROC launching ranges 1500 to 12000 yards
Depth Officially “Greater than 1,200 ft (365 meters)”
Reportedly 1,500 ft.
Search/attack depth settings Minimum 20 yards
Maximum 1500 yards
Speed Greater than 28 knots (32.2 mph, 51.52 kph)
Reportedly 45 kt
Actual 45 knots
Run characteristics 6-8 minutes
Guidance System Homing mode – Active or passive/active acoustic homing
Launch/search mode – Snake or circle search
Warhead 98 lbs. of PBXN-103 high explosive (bulk charge)

MK-46 torpedo data

MK11 depth charge

Depth Charge, Mark 11 Mod 3

The Mk 11 depth charge was developed by British Aerospace (now BAE Systems) for air delivery from maritime aircraft and helicopters. The Mk 11 depth charge was designed for shallow water operations against submarines on the surface or at periscope depths. It is fully compatible for carriage and release from a wide range of ASW helicopters and fixed-wing maritime patrol aircraft. The Mod 3 version incorporates a 4mm mild steel outer case and nose section, which is designed to withstand entry into the water at high velocities without distortion. It has been cleared for carriage on Lynx, Merlin, NH90, Sea King and Wasp helicopters. Source

The SH-2G (A) received provisional acceptance into service in October 2003. The helicopters were grounded in May 2006, after problems with the flight control system and ITAS software.

A review of the programme was initiated in May 2006 and in May 2007, the RAN decided to continue with the project rather than pursue alternatives.

However in March 2008, the RAN finally announced the cancellation of the programme. The helicopters were returned to Kaman for possible sale to another customer. Any profits obtained will be shared between Kaman and the Australian Government.

In 1995, Egypt ordered ten SH-2G (E) equipped with dipping sonar and a digital hover coupler under a foreign military sale agreement (FMSA) with the US Navy. Deliveries began in 1997 and were completed in 1998. Egypt lost one aircraft during a sea crash in 2006.

In August 2005, the Egyptian Air Force awarded a $5.3m contract to Kaman to modernise two SH-2G (E) Super Seasprite helicopters with an option to include two more aircraft. The two upgraded SH-2G (E) aircraft were delivered in February 2009.

Upgrades included the addition of a digital automatic flight control system (DAFCS), FLIR systems, health and usage monitoring systems (HUMS), ALE-47 countermeasures dispensing, APN-194 radar altimeter and AHS-1000 attitude heading referencing systems (AHRS)

The Polish Navy has four SH-2Gs, which were transferred from the US Navy between 2002 and 2003, to serve on ex-USN Oliver Hazard Perry frigates.

1777299.jpgPolish Navy – Image

The SH-2G (I) Seasprite, a new variant of the SH-2G Super Seasprite, was displayed at the Black Sea Defence and Aerospace Exhibition and Conference held in Bucharest, Romania, in September 2008.

The New Zealand Navy ordered for five aircraft in 1997, including two Anzac frigates and the Leander Class frigate, HMNZS Canterbury, under a NZD$12m contract. Deliveries began in 2001 and were completed in March 2003. The New Zealand SH-2G is armed with Maverick missiles.

In June 2012, Kaman received authorisation from the US Department of State to negotiate the sale of SH-2G (I) Super Seasprite helicopters with the New Zealand Government. The company signed a $120m contract with the New Zealand Ministry of Defence for ten SH-2G (I) Super Seasprite helicopters in May 2013. The first SH-2G (I) helicopter made first flight in April 2014 and was accepted by the New Zealand Defence Force (NZDF) in December 2014. The deliveries are scheduled for completion by mid-2015.

10986886_10153721628633009_1253365162553631031_n.jpgThe first of the Royal New Zealand Navy’s new SH-2G(I) Seasprites made its first flight at RNZAF Base Auckland. Whenuapai. Image
Entered service 1991
Crew 3 men
Dimensions and weight
Length 16 m
Main rotor diameter 13.5 m
Height 4.09 m
Weight (empty) 3.48 t
Weight (maximum take off) 6.12 t
Engines and performance
Engines 2 x T700-GE-401 turboshaft engines
Engine power 2 x 1 723 shp
Maximum speed 256 km/h
Cruising speed 222 km/h
Service ceiling 7.29 km
Range 1 000 km
Passengers up to 4
Payload capacity ?
Payload capacity (external load) up to 1 814 kg
Machine guns 1 or 2 x 7.62-mm M134 Gatling guns
Missiles one or two AGM-119 Penguin, AGM-65 Maverick
Torpedoes one or two MK46 or MK50 torpedoes
SH-2G specification Data


Main material source


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