The Ivar Huitfeldt Class frigates are being built by Odense Steel Shipyard for the Royal Danish Navy. Three frigates are scheduled to enter service between 2012 and 2013. The class is preceded by Niels Juel corvette. It is the navy’s largest acquisition project to date.
The keel for the first ship in the class, Iver Huitfeldt (F 361), was laid in June 2008 and launched in March 2010. The frigate was transferred to the Defence Acquisition and Logistics Organisation (FMT) in January 2011 for testing. It is expected to enter operational service in 2012. The second frigate, Peter Willemoes (F362), was laid in March 2009 and launched in December 2010. The third and final ship, Niels Juel (F363), was laid in December 2009.
Ivar Huitfeldt design
The seven-deck monohull design features 15 watertight sections. It has been designed to reduce radar signature, infrared radiation, underwater noise and magnetic signature to make the ship as invisible as possible to an enemy.
The Iver Huitfeldt Class design is an evolution of the Absalon Class developed by the navy and Odense Steel Shipyard (OSS).
The exterior is easily distinguished from Absalon Class as the Iver Huitfeldt is one deck lower, and lacks an internal multipurpose deck (flex deck). The chimney’s design has been changed to prevent excessive steam impact of SMART-L radar.
The design protects the crew from contamination. The frigate is divided into six hazard zones. All the zones are equipped with separate filters to protect the crew against chemical, radioactive or biological weapon attacks and airlocks are provided between them.
The frigates are being constructed simultaneously in the same dock in a phased manner.
The first phase includes assembly of all welded steel blocks into a ship platform, while civil equipment is installed by the shipyard and its subcontractors in the second phase.
Following delivery from the shipyard, the frigates will sail to Naval Station Korsor where military installation work will take place in the final phase.
Command and control
The frigates will be equipped with the Terma C-flex command and control system. The C-flex system integrates Commercial, off-the-shelf (COTS) units including a server, a console computer, an interface computer, a LAN switch and an UPS unit in an environmentally protected 19” rack. It is based on the T-Core open architecture platform.
The C-flex receives information from ship board sensors and distributes the data to weapon systems after evaluation. The computer creates an electronic image of the real-time situation around the frigate.
The frigate can exchange information with other units based at sea, air or land. The communications are conveyed through data links and other computer networks.
Terma to Support Royal Danish Navy Iver Huitfeldt Class Frigate BMD & IAMD Upgrade
The Danish Defence Acquisition and Logistics Organization (DALO) has entered into an agreement and signed a contract with Terma on Integrated Air and Missile Defense (IAMD). The aim is to provide DALO with study and advisory support within the Ballistic Missile Defense (BMD) and IAMD domains related to the Danish government’s decision to upgrade at least one of the IVER HUITFELDT class frigates to a BMD sensor role and offer this capability to the NATO BMD system. 13 April 2016 – navyrecognition
Royal Danish Navy sets SM-2 buy as priority, mulls frigate BMD upgrade: Here
The frigate will be fitted with Lockheed Martin mk41 multimissile vertical launch system (VLS) for the evolved Sea Sparrow missile (ESSM) and SM-2 IIIA missile.
Lockheed Martin mk41 multimissile vertical launch system
Lockheed Martin mk41 multimissile vertical launch system (VLS) for the evolved Sea Sparrow missile (ESSM) and SM-2 IIIA missile
Evolved Sea Sparrow missile (ESSM)
Sea Sparrow missile (ESSM) The Sea Sparrow SAM is equipped with an improved semi-active radar homing guidance system in an 8in diameter forebody guidance section. The guidance system uses inertial / command mid-course continuous wave radar or interrupted continuous wave radar illumination-data. Both X-band and S-band data links are used to transmit the information to the combat systems. The Sea Sparraw SAM provides increased performance against smaller targets. The propulsion system provides the missile with a speed of over Mach 4 and a range of more than 50km. (naval-technology.com)
SM-2 IIIA missile
SM-2 IIIA missile The Block III missiles differ from earlier blocks by the addition of the MK 45 MOD 9 target detecting device, for improved performance against low altitude targets. The Block IIIB missile additionally has a dual semi-active/infrared seeker for terminal homing. The dual seeker is intended for use in high-ECM environments, against targets over the horizon or with a small radar cross section. 40 to 90 nmi (74 to 167 km) > 24,400 m (80,100 ft) Mach 3.5
The mk41 system can fire anti-air, anti-submarine and anti-ship missiles. Ivar Huitfeldt will also be armed with the Boeing Harpoon block II anti-ship missile system and the Eurotorp MU90 lightweight torpedo fired from a twin or triple torpedo launcher.
Boeing Harpoon block II anti-ship missile
Boeing Harpoon block II anti-ship missile system
The Harpoon is an all weather, subsonic, over the horizon, anti-ship missile which can be launch from surface ships, submarines and aircraft. The Harpoon Block II is the latest version of the Harpoon missile and is able to strike land-based targets and ships in littoral environments. The Block II incorporated the GPS/INS guidance system of the JDAM bombs and the mission computer, software, and GPS antenna employed by the SLAM ER missile.
Diameter: 340 millimeter
Length: 4.63 meter (15.2 foot)
Wingspan: 910 millimeter
Max Range: 124 kilometer (67 nautical mile)
Top Speed: 237 mps (853 kph)
Thrust: 660 pound
Warhead: 224 kilogram (494 pound)
Weight: 691 kilogram (1,523 pound)
Eurotorp MU90 lightweight torpedo
Eurotorp MU90 lightweight torpedo
The frigate’s main gun will be an Oto Melara 76mm Super Rapid gun. The Oerlikon Millennium 35mm naval gun system will onboard provide close-in air defence. It is based on the new Oerlikon 35mm revolver cannon land-based air defence system. A 12.7mm machine gun will also be available aboard the ship.
Oto Melara 76mm Super Rapid gun
Oto Melara 76mm Super Rapid gunThe revolving ready-ammunition magazine for one of the 76mm gun mounts.
The Oto-Melara / Oto-Breda 76/62SR 76mm (3-inches) 62-caliber Super Rapid gun is a lightweight, automatic loading, rapid fire naval gun system used against shore, sea and air targets.
Manufacturer: 1963-2001 Oto-Melara / 2001- OtoBreda
Produced: Compact: 1963- / Super Rapid: 1988-
Caliber: 3 inches / 76,2 mm
Barrel lenght: 186 inches / 4,72 meters (= 62 caliber)
Weight: 7900kg, empty (Super Rapid)
Shell: 76 x 900 mm / 12,34 kilograms
Elevation: – 15° to + 85°
Rate of fire: Compact: 85 rpm / Super Rapid: selectable from single shot up to 120 rpm
Muzzle Velocity: 925 m/s (1100 m/s – DART)
Magazine: Compact: 80 rounds / SR: 85 rounds
16 kilometers with standard ammunition
20 km with extended range ammunition
up to 40 km with VULCANO ammunition
– Super Rapid
– Stealth casing
– DAVIDE/STRALES radio frequency guidance system for DART guided ammunition
– HE (high explosive) – 6,296kg / Range 16km / effective range 8km (4km vs. air targets at elev. 85°)
– MOM (multi-role OTO munition)
– PFF (pre-formed fragmentation) – anti-missile ammunition
– SAPOM (semi-armored piercing OTO munition) – 6,35kg / Range 16km
– SAPOMER (semi-armored piercing OTO munition, extended range) – Range 20km
– DART (driven ammunition reduced time of flight) – sub-calibre guided ammunition against multiple targets
(missiles and maneuvering targets at sea) 4,2kg in barrel / 3,5kg in flight / 660mm lenght / effective range >8km
– VULCANO (76mm unguided and guided extended range ammunition) – under development
Oerlikon Millennium 35mm naval gun system
Oerlikon Millennium 35mm naval gun system will onboard provide close-in air defence based on the new Oerlikon 35mm revolver cannon land-based air defence system
|Designation||Gun: Oerlikon 35 mm/1000 KDG
Mounting: Millennium GDM-008
|Ship Class Used On||Royal Danish Navy: Absalom class Combat Support Ships and Iver Huitfeldt class frigates
Taiwan: Support Ship Panshih
Venezuela: Guaiqueri and Guaicamacuto classes offshore patrol vessels
|Date Of Design||about 1995|
|Date In Service||2003|
|Gun Weight||992 lbs. (450 kg)|
|Gun Length oa||161.8 in (4.110 m)|
|Bore Length||108.9 in (2.766 m)|
|Rate Of Fire||1,000 rounds per minute cyclic|
|Note: Weapon may be set to fire single shots, 200 rounds per minute or 1,000 rounds per minute.|
12.7mm machine gun
A 12.7mm machine gun
Sensors and radars
SMART-L long-range surveillance radarAPAR multifunction radarFuruno navigation radar
The sensor suite will include the SMART-L long-range surveillance radar, the APAR multifunction radar, Furuno navigation radar and ATLAS ASO 94 hull-mounted sonar. The SMART-L operating on L band will provide very long range surveillance.
FLIR system Seastar Seafire IIISaab CEROS 200 fire control radars
Other subsystems will include ATLAS ASO 94 hull mounted sonar, FLIR system Seastar Seafire III, Saab CEROS 200 fire control radars and EDO 3701 electronic warning and assessment system.
EDO 3701 electronic warning and assessment system. (defense-studies.blogspot.com)
The Iver Huitfeldt frigate will feature a helicopter deck and hangar to support the operations of medium-sized helicopters such as the AW101. The deck can also handle larger and heavier helicopters of up to 20t.
The frigate will be fitted with 12-barrelled Terma DL-12T 130mm decoy launchers. Terma SKWS (soft kill weapon system) is a modern decoy-launching system that can fire SeaGnat decoys. The Terma launcher provides 360° coverage against incoming anti-ship missiles.
12-barrelled Terma DL-12T 130mm decoy launchers SeaGnat decoys
The Ivar Huitfeldt Class will have a crew 101 divided into four divisions:
- surgical division of 32 (eight officers, three sergeants and 21 privates)
- weapons division of 17 (two officers, three sergeants and 12 privates)
- engineering division of 32 (six officers, three sergeants and 23 privates)
- management division of 20 (two officers, four sergeants and 14 privates).
Engineering Control center
Each frigate will have berths for 165 people, hence small staff, helicopter crew, doctors, students and trainees are accommodated.
The frigate will be powered by four main MTU 20V 8000 M70 diesel engines, placed two and two each, in a combined diesel and diesel configuration. The propulsion system will provide a speed of over 28kt.
MTU 20V 8000 M70 diesel engine
The ship will be equipped with two Becker rudders and a bow thruster with an output of 900kW. A set of active stabilisers will provide stability to the frigate. Four generating sets comprising two Caterpillar engines and Leroy-Somer generators will be provided. Each pair will include a CAT3512 and CAT3508 generating 1,360kW and 920kW respectively.
Source: naval-technology.com/intercepts.defensenews.com/from the net
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