SUPER VITA




Roussen Class (62 Metre Super Vita) Fast Attack Missile Craft, Greece
Elefsis Industrial Enterprises SA has been awarded the contract for the supply of three Super Vita 62m fast attack missile craft for the Hellenic Navy. The ships, called the 'Roussen Class', are being constructed at the Elefsis yard near Athens. Vosper Thornycroft provides design, construction support, ship's equipment and logistic support services to Elefsis. The initial requirement is for three fast attack craft and part of the agreement includes provision of two ex-Royal Navy Hunt Class mine countermeasure vessels.
The fast attack craft has a displacement of 580t fully loaded. The first ship, HS Roussen (P67), was launched in November 2002 and was commissioned in December 2005. The second, HS Daniolos (P68) was launched in July 2003 and was delivered in spring 2006. The third, HS Kristallidis (P69), was launched in April 2004 and is due for delivery in November 2006.
In September 2003, a contract was awarded for a further two ships (HS Grigoropoulos and HS Ritsos), to be built by Elefsis and delivered in 2006 and 2007.
A newly covered construction facility in the Elefsis yard has been built for the construction of the three craft and for future projects.
ATTACK CRAFT DESIGN
The design of the fast attack craft is based on the smaller Vita class vessels already in service with the Qatar Emiri Navy and similar-sized craft built for Oman and other countries.
The fast attack craft has a steel hull and aluminium superstructure. Vosper Thornycroft Controls is supplying the electrical power distribution system, the platform management system, electrical machinery and the mine counter-countermeasures system.
FAST ATTACK CRAFT WEAPONS
The ship is armed with the MBDA (formerly EADS Aerospatiale-Matra) Exocet ITL 70A MM40 Block II surface-to-surface missile. Exocet uses active radar homing and has a range of 70km. The two four-cylinder launchers are installed on the missile deck, set in a crossed configuration with one facing starboard and one facing port side.
The vessel’s air defence missile system is the RAM (Rolling Airframe Missile), to be supplied by RAMSYS, a consortium of MBDA (formerly EADS Daimler-Chrysler Aerospace), Diehl and BGT.
The missile system’s GMWS Mk 31 21-cell launcher is installed on the stern deck. The RIM-116A Block I missile has a dual-mode radar / imaging infra-red seeker and a range of 10km.
The craft's main gun installed on the bow deck is the Oto Melara Super Rapid 76mm gun which is capable of firing 6kg shells at a rate of 100 rounds per minute to a range of 16km. Two Oto Melara 30mm guns are installed on either side of the upper deck to the stern of the main radar mast.
The ship is equipped with the Argo Systems AR900 electronic support measures system and the Sippican SRBOC decoy launcher.
VESSEL COMBAT MANAGEMENT
The vessel is fitted with the Tacticos combat management system supplied by Thales Nederland (formerly Signaal). Tacticos provides automatic threat evaluation, allocates sensors and assigns weapons for target engagement.
The combat room accommodates the MOC Mark 3 consoles which include three vertical consoles and one conference console. The Tacticos system is integrated with the Exocet missiles, 76mm gun, 30mm guns, RAM system, DR 3000 electronic support measures and the chaff launcher.
The craft is equipped with the Thales Nederland Sting fire control system.
SENSORS
The vessel's sensor suite includes the Thales MW08 3D G-band surveillance radar, Thales Nederland Mirador electro-optical target tracker, an integrated Thales Nederland Scout Mark II low probability of intercept radar and Northrop Grumman (formerly Litton) Marine Bridgemaster-E navigation radar.
COMMUNICATIONS
Redifon is supplying the communications system. The Data Link 11, model MDM 2002 is supplied by Rockwell Collins. The radome of the satellite communications system is installed on the upper deck between the main radar tower and the 30mm guns.
Intercom Systems A/S of Denmark will supply the ICS 2000 integrated communications system. The information friend or foe system is the Aeromaritime IFF Mk 12
PROPULSION
The main propulsion system is four MTU 16V595 TE90 engines with ZF type BW1556666 / 1557 S gear boxes and three 250kW generators driving four fixed pitch propellers. The fast combat craft achieves a speed of 35kt. Vosper Thornycroft Marine Products is supplying the 900 Series steering system and the 300 Series stabiliser system.
VITA-class

http://i96.photobucket.com/albums/l189/KORNET-E/qatar1.jpgBarzan (Vita) Class Fast Strike Craft, Qatar
In 1992 Qatar ordered four Barzan (Vita) Class fast strike craft for the Qatar Emiri Navy from British shipbuilder Vosper Thornycroft at Southampton. The first two ships QENS Barzan and Huwar were handed over in 1996 and the final two ships QENS Al Udeid and QENS Al Deebel were delivered in 1998.
DESIGN
The design is a derivative of the Vosper Thornycroft 56m patrol craft built for Oman and Kenya, with a redesigned internal arrangement and superstructure to provide a second deck at tank level. Modifications to the hull included increasing the freeboard amidships and flaring the topsides to widen the beam at the weatherdeck. The hull and superstructure design has incorporated features for reduction of radar cross section. Active roll-damping fin stabilisers have been added for operation in high Sea States.
COMMAND AND CONTROL
The combat data system is the Thales Nederland (formerly Signaal) SEWACO FD with the fully distributed Thales TACTICOS combat management system and a Link Y communications link. TACTICOS provides automatic threat assessment, weapon assignment and sensor allocation. Weapons control is provided by the Thales Nederland STING radar/electro-optic director and the IRSCAN infrared search and track system provides passive surveillance for the Goalkeeper close-in weapon system.
Track data is provided to the Oto Melara 76mm Super Rapid gun by the STING fire control radar and electro-optical tracking system. Tracking is supported by television, optional infrared camera tracking and laser rangefinder. The system provides sector search with automatic target detection, projectile location and kill-assessment.
EXOCET AND MISTRAL MISSILES
The Barzan (Vita) class is equipped with two four-cell launchers for MBDA (formerly Aerospatiale-Matra) MM40 Exocet surface-to-surface sea-skimming missiles. With a range of 4 to 70km, the Exocet missile has inertial cruise guidance, active radar homing, and a warhead of 165kg. The cruise height of the missile is about 100m and in the terminal sea-skimming phase the height is 5 to 8m.
The surface-to-air missile system is the MBDA (formerly Matra BAe Dynamics) Sadral six-cell launcher for the Mistral missile. The infrared guided Mistral has a range of 4km. The warhead, consisting of 1kg of high explosive and loaded with 2kg of tungsten balls, is fitted with an impact and laser proximity fuse.
GUNS
The gun is the Oto Melara 76mm/62 Super Rapid, with 85° elevation, delivery 120 rounds per minute, and range 16km. The shell weight is 6kg. The ammunition supply and feed system for the gun is installed below the deck. The feed magazine usually contains 70 rounds, while another ten rounds are in the upper mounting and in the screw feeder. The mounting control console is below-decks and linked to the Thales Nederland Sting fire control system.
The close-in-weapon system is the 30mm Goalkeeper from Thales Nederland. Goalkeeper automatically performs initial search through to destruction and kill-assessment. When the target is detected, threat evaluation and priority are determined, the target is designated and tracked by the I- and K-band radars. Goalkeeper has seven barrels with a combined delivery rate of 4,200 rounds/min and a range of 200m to 3km. The Vita class is also equipped with two 12.7mm machine guns.
COUNTERMEASURES
Countermeasures include the EADS Defence & Electronics Dagaie Mk 2 chaff dispensers, Thales DR3000S electronic support measures and Thales Salamandre ARBB 33 radar jammer.
SENSOR SUITE
The air and surface search radar is the Thales MRR-3D multi-role radar operating at G band. The I-band navigation radar is Kelvin Hughes 1007 and the I/J band fire-control radar is the STING from Thales Nederland.
PROPULSION SYSTEM
The Barzan is driven by four MTU 20V 538 TB93 diesels, 18,740hp, in two machinery spaces, each driving a fixed pitch propeller. One man operation from the bridge of the propulsion, electrical generation and auxiliary systems is possible using a machinery control and surveillance system. The maximum speed is 35 knots and the range is in excess of 1,800nm at 12 knots.