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PAAMS - Principal Anti Air Missile System                   
        Schematic of the PAAMS(Sampson) weapon system
          
         
        Launch of an Aster 30 missile from the French Navy trails ship Ile         d'Oléron
          
         
        The Type 45 anti-air warfare destroyer will be equipped with the Sampson
        multifunction (forward) and S1850M volume search (aft) radars, as
        shown in this computer-generated image from early 2000.
          
         
        Computer Graphic of an         Aster launch from HMS 
Daring
          
                  The first UK firing of an Aster missile, from the trials barge Longbow          on 4 June 2008
         
         
                  History of PAAMS
         The origins of PAAMS can be traced back to the signing of a         tri-national Staff Requirement in December 1992 by  the Italians,         French and British, to commence work on a new warship for area air         defence, the Common New Generation Frigate (CNGF) - Horizon.  This         was to be armed with the Principle Anti-Air Missile System (PAAMS),         which in turn would utilise a new generation  of medium-range naval         and ground-launched air-defence missiles initially known as Famille de         missiles Sol-Air Futurs (FSAF), or the Future Surface-to-Air Family of         missile systems. France and Italy agreed in 1989 to develop the FSAF         range of missile systems, and would share the costs on a 50-50 basis.
         An immediate major obstacle to the Horizon project proceeding on         schedule was the disagreement between the UK and its continental         partners over the radar configuration for the frigate's Principle         Anti-Air Missile System (PAAMS). The UK wanted a MESAR variant, while         the Italians and the French being happy with the EMPAR system. As a         compromise, the three governments asked two consortia, Eurosam (Thomson-CSF/Aerospatiale/Alenia)         and UKAMS (BAe Dynamics - GEC Marconi) to conduct studies to see if a         single interface could be produced that could handle either type of         radar.  By the end of October 1994, the question of whether to         adopt the EMPAR or MESAR/SAMPSON variant had been effectively left up to         the UK Government as the defence industry had guaranteed that both EMPAR         or SAMPSON could be integrated in to the PAAMS architecture. 
         The delays in signing the MoU for the PAAMS meant that the remainder         of the Horizon programme was delayed. The UK effectively put a hold on         further progress by refusing to sign the Supplement 1 to the Project         Horizon MoU until the three partners had reached agreement over PAAMS in         that they should find a cost-effective technical solution that also met         national work share arrangements.  The UK also had a desire to         derive maximum long-term benefit from the radar for PAAMS and had         reservations about the performance of EMPAR. Issues of work share, cost         and competition complicated the final decisions over two major PAAMS         subsystems - the Long-Range Radar (LRR) and vertical launch system         (VLS).
         Three MoUs were finally signed in March 1996.  They covered the         general rules governing the three partners' collaborative effort for         overall development and production of the PAAMS programme (PAAMS MoU),         the PAAMS Full Scale Engineering Development Initial Production Phase         (PAAMS MoU Supplement 1) and a supplement to the Horizon programme         covering the design definition phase (CNGF Programme MoU Supplement).
         As the programme continued, problems continued to arise.  There         were disagreements in early 1997 over the type of vertical launch system         to be employed.  The French and Italians favoured the         Franco-Italian Sylver A50 developed by DCN and Alenia, and licensed by         BAe Dynamics.  The UK however, had shifted to support the Mk 41,         supplied by Lockheed-Martin, which would allow the installation of US         SM-3 based theatre missile defence missiles. The UK had also been         refusing to negotiate a full-scale engineering development and initial         production contract for PAAMS on the terms that had been offered by         industry to the PPO, and had resisted moves by France and Italy to relax         the PAAMS performance specification set out in the original         agreement.  The divergence of performance goals coupled with         different national contracting procedures had produced a schism in the         programme, which had been made public by a leaked letter from the Chief         of Defence Procurement (CDP), Sir Robert Walmsley. The letter was         addressed to his French and Italian National Armament Director (NAD)         counterparts, and outlined the UK's concerns - that the UK still wanted         Column 2 performance, which was the Royal Navy's minimum acceptable         performance criteria, meaning a local area capability against         simultaneous threats. France and Italy had been ready to accept Column 1         performance, which was really only a replacement for the existing SM-1MR         missile. Walmsley had also noted that industry had been unwilling to         respond to the joint requests either in the form of an acceptable offer         for PAAMS or more information.
         Finally, in mid-1997, the NADs of France, Italy and the UK         conditionally endorsed the industrial management framework for the         collaborative development and production of PAAMS. PAAMS was designed to         provide CNGF with area, local and point defence capability, based on         Aster 15 and 30 surface-to-air missiles. The Aster 15 missile had just         been successfully tested in a 'hit-to-kill' engagement with a live MM38         Exocet anti-ship missile, demonstrating that it could carry out the         local-area defence mission, against a crossing target, as required by         the Royal Navy.
         By the summer of 1998, the PAAMS Programme Office had chosen the         Sylver missile launcher (made by DCN) rather then the rival Mk 41         vertical launcher, which is manufactured by Lockheed Martin. This was         something of a blow to the Royal Navy as they had expressed interest in         acquiring a theatre ballistic missile defence capability based on the         Standard Missile Block IV (SM-3 was a derivative of this) and the         Tomahawk Land Attack Missile.  The A50 Sylver launcher could not         fire either of these missiles.
         The industrial partners developing PAAMS were now at the point of         being ready to sign an agreement on full-scale engineering development         and initial production.  The PAAMS Programme Office had virtually         completed its deliberations concerning the selection of outstanding         elements of the PAAMS system, as well as the allocation of work shares,         while the UK Government had nearly finished its Strategic Defence         Review.  Aerospatiale had already begun extolling the virtues of         the PAAMS system as a unique multi-mission air-defence system, which         uses a single active-homing missile and sensor system to fulfil the         self-defence, local-area defence (over seven kilometers) and area         defence (up to fifty-five nautical miles radius). Combined with a radar         that has a sufficiently high update rate (such as SAMPSON), Aster could         be used in the theatre anti-ballistic missile role, but it would need         both a new warhead (to produce larger fragments) and greater         range. 
         But unfortunately by this stage the industrial, work share and         management disputes surrounding the Horizon Common New Generation         Frigate platform began to seem irresolvable, and delays continued too         accumulate unacceptably.  Finally in April 1999 the UK decided to         pull out of the platform component of the CNGF, although it confirmed it         would still continue with the PAAMS component.  Instead it would         proceed with a UK replacement to the Horizon CNGF programme - the Type         45 anti-air warfare destroyer - which would be armed with a United         Kingdom variant of the PAAMS - UK PAAMS.
         
UK PAAMS
         The main armament for the Type 45 destroyers will be the UK variant         of the collaborative (UK, French, Italian) Principal Anti Air Missile         System (PAAMS).  PAAMS provides the combat system to engage and         destroy aircraft and sophisticated anti-ship missile targets threats         both in defence of its own platform and others in its immediate         area.  If authorised by the command team PAAMS can conduct, fully         automatically, a number of simultaneous engagements.  The system         will be particularly optimised for operations in littoral regions around         the shore.
         The UK PAAMS variant consists of a number of elements:         
- PAAMS Command & Control;
 
- SAMPSON Multi Function Radar (MFR) for             surveillance and fire control; and
 
- 48 silo Sylver Vertical Launch System (VLS) capable of deploying             any combination of the following two missile types:-
 
         
- Aster 15 - for Self Defence use and against Local Area Defence               Threats;
 
- Aster 30 -for Self Defence, Local Area Defence and Area Defence.
 
          Closely associated, but not officially part of PAAMS is the:         
- S1850M Long-Range Radar (LRR) long range air surveillance radar
 
         The BAE Systems SAMPSON Multi-Function Radar (MFR) radar is probably         the most advanced radar currently under development anywhere in the         world .  Key features include its multi function operation, wide         aperture / high discrimination spinning faces combined with very high         duty cycle electronic beam steering, and far horizon visibility from a         position atop a very high foremast. [For much more background         information about SAMPSON's development, read this
         page] Against supersonic skimming and jinking missiles, for example,         range of detection and response is a vital determinant of success.          That demands range of visibility and discrimination which the Sampson on         Type 45 uniquely delivers, even in hostile electronic         environments.  This is combined with  the super agile Aster         missiles, which particularly thanks to their terminal phase lateral         thrusters have an extraordinarily high probability of kill.          Sampson plus Aster delivers a performance a generation ahead of the         benchmark American developed Aegis Combat System (including the         multifunction AN/SPY-1 phased array radar) and Standard SM-2 missile         system which is in service, or entering service, in many Navies around         the world.
                                                
              A spherical form for Sampson radar
              dome was adopted in 2000,
                             Sampson is an active array radar combining in a single system         surveillance and targeting data and the ability to pass up-link messages         to active-homing Aster missiles in flight.  Sampson uses two         rotating arrays which are claimed to combine a high data rate with more         pulses striking the target to provide greater accuracy and better ECCM         performance. The 4.6 tonne mast-head assembly is air cooled and each         sensor face has some two thousand five hundred 2-20W gallium arsenide         transceivers, each with four 10W channels, providing a peak power of         25kW per face.
         Sampson functionality includes long- and medium-range search, surface         picture and high-speed horizon search.  It can handle multiple         threats simultaneously and perform tasks including multiple target         tracking, rapid track conformation, multiple channel fire control,         target classification, terminal homing, kill assessment, and mid-course         guidance for the Aster missile.  In addition to this the MFR         provides the combat system with three dimensional surveillance track         data and is very resistant to jamming.  It supports point and area         defence against current and future forecast air threats in an         environment of heavy jamming and land and sea clutter.  
                                                
              Launch of an Aster 15 missile vertically
                               
              The very rapid tilt-over is demonstrated
                               
              Aster 30 missile
                           The Long Range Radar (LRR) extends the range of air               surveillance and, in conjunction with the MFR, provides very               comprehensive radar coverage for aircraft control, IFF, threat               detection and evaluation, and tactical picture compilation. The               LRR is the S1850M from Alenia Marconi Systems, a modified version               of Thales (formerly Signaal) SMART-L fitted to Dutch and German               ships.               The missile command and control system interfaces between PAAMS               and the ship's combat management system.  
               On the Type 45, the SAM missile carried will be the active               homing Aster missile, in a mix of long range (Aster 30) and short               range (Aster 15) variants, housed in a 48-cell Sylver (Systeme de               Lancement Vertical) A50 vertical launch system (VLS).  Aster               is both faster and more agile than the Sea Dart missile used on               the current Type 42 destroyer.  The combination of missile               types offers multiple channels of fire and scope for development               when further improvements in threat missiles occur.  
               The Aster is a two-stage missile, to ensure maximum               effectiveness of the interceptor stage. The solid-propellant               booster stage is sized according to the mission. It separates from               the Aster "dart", or terminal stage, a few seconds after               launch.  The Aster terminal stage is also equipped with a               sustainer motor, a proximity fuse and a fragmentation warhead that               is effective even against the most hardened targets.  For a               maximum ability to attack highly manoeuvrable missiles and obtain               direct impact, the terminal stage uses an innovative system called               "Pif-Paf".   This combines conventional               aerodynamic control with a direct thrust control system that uses               gas jets acting on the missiles centre of gravity.
                                                                        Main                       characteristics                     Aster                       15                     Aster                       30                                                           Terminal Velocity                     1,000                       metres/sec
                      (Mach 3.5)                     1,400 metres/sec (Mach                       4.5)                                                           Propulsion                     Solid                       propellant, two stage                                                           Manoeuvrability                     >                       50 G's                                                           Guidance                     Continuous                       updating of target position via automatic up-link from                       radar.
                      Active radar seeker for terminal phase                                                           Steering                     PIF/PAF                                                           Fuse                     EM                       proximity fuse                                                           Length                     4.0 m                     4.8 m                                                           Weight                     300 kg                     445 kg                                                           Terminal dart                     diameter                       180 mm ; weight 100 kg. at intercept                                                           Maximum range                     30                       km                     100 km                                                           Minimum intercept range                     1.7 km                     3 km                                                           Maximum altitude of interception                     10,000 m                     20,000 m                                                           Other features                     High                       resistance to ECM
                      Focused fragment warhead
                      Ready-to-fire container                                                                                                                                    
                             UK PAAMS can track approximately 2000 targets simultaneously and is able         to engage up to 12, including 8 in local self-defence.  All 48         Aster missiles are "ready to fire", with just a few seconds         elapsing from first autonomous detection of a target to the firing of         the first Aster missile, and 8 Aster's can be fired within 10         seconds.  Up to 16 Aster missiles can be simultaneously guided in         the air at once, making it difficult for attackers to swamp the ships         air defence's with saturating threats from aircraft and even supersonic         missiles.  Maximum theoretical range against aircraft is 100km         although 80km is more usually quoted (a French senate report         says PAAMS can intercept up to 70 km), against missiles the maximum         range is 25km.  The Aster missiles active seeker allows almost         instant launching or further weapons or retargeting of in-flight missile         once the target has been locked-up.         The PAAMS project is based in Paris. The prime contractor is         EUROPAAMS, jointly established by EUROSAM (a joint venture company         formed by the two French companies Thomson-CSF (now Thales) and         Aerospatiale Matra (now part of EADS) and the Italian company Alenia         Marconi Systems) and UKAMS (a subsidiary of Matra BAe Dynamics, UK).          Aerospatiale Matra is responsible for the Aster missiles and         Alenia Marconi Systems for the 'Sylver' launchers, actually built by DCN         of France.  
         
A Full Scale Engineering Development and Initial         Production (FSED/IP) agreement for PAAMS was signed during in August         1999 at a value of FFr15 billion ($2.3bn).  The cost to the MoD of         PAAMS FSED/IP is about £1 billion ($1.5bn), the contract being placed         through UKAMS.  The UK is paying the largest share of the FSED/IP         costs because it got off lightly in the preceding "FSAF"         (Future Surface-to-Air Family of missiles) Phases 1 and 2 which were         funded by the French and Italians on a 50:50 basis to a total of $3         billion between1989 and 1998.  However it's worth noting that other         than the Sampson radar (to be used only by the UK's Type 45         destroyer's), PAAMS and its Aster missiles will still be an almost         entirely French-Italian developed and manufactured product.
         An initial production contract was finally awarded on 22 September         2000 on behalf of the three participating countries by the French         defence procurement agency, DGA, to EUROPAAMS for the development and         delivery of three PAAMS systems with 200 Aster 15 and 30 Naval missiles,         these systems are to equip the first-of-class air defence vessels for         each of the three countries:- a British Daring class Type 45 destroyer,         a French Forbin class Horizon frigate and an Italian Bergamini class         Horizon frigate.  PAAMS qualification for operational service is         expected between 2004 and 2006.
         On 28 March 2002 a further agreement was signed by the three          countries to cover the future ordering and delivery of systems and          missiles for seven more ships (5 Type 45 destroyers and one more          Horizon-class frigate each for France and Italy).  These vessels          will be commissioned between 2006 and 2009.  The agreement is          believed to cover between 400 and 500 additional Aster 15 and 30 Naval          missiles.  
                                                                         
              An               Aster 15 firing from the French aircraft carrier
 Charles de              Gaulle
                             The first series-produced Aster 15 Naval missiles were         delivered at the beginning of December 2001 for the French Navy's         Charles de Gaulle aircraft carrier.  The Charles de Gaulle is         fitted with a SAAM/FR system consisting of a fire control system which         integrates the Arabel multi-function radar, Sylver vertical launch         modules and Aster 15 Naval missiles.  On 30 October, 2002 Charles          de Gaulle achieved the first successful operational firing of its SAAM/FR          antimissile self-defence system.
         In mid 2002 DCN said that its Ruelle plant was working on an         A70 Sylver module, which is intended to be a versatile multiple         missile-launcher. The weapons with which it is intended to be compatible         include the ship-launched variant of MBDA's Scalp naval land-attack         missile, a Aster Block 3 theatre missile-defense system, Raytheon's         Tactical Tomahawk, and/or a vertically launched anti-submarine missile         round.  Pre-feasibility studies for the A70 variant are already in         hand, and the expectation is that full-scale engineering and development         can start by the beginning of 2004. First deliveries to a shipyard         therefore would be possible by 2007, to be followed by the first firing         of a Scalp naval missile in 2008.
         On 13 November 2003 the UK Ministry of Defence formally ordered          through OCCAR - the organization for joint armaments co-operation (Organisme          Conjoint de Cooperation en matiere d’Armement) Aster 15 and 30 missiles          worth  £278 million.  UKAMS, a subsidiary of defence contractor          MBDA, is the prime contractor.
         Anti-Ballistic Missile Capability
         The 1998 UK Strategic Defence Review policy on British         Ballistic Missile Defence (BMD) deployment was, as one commentator put         it  "Wait (a long time) and see".   However         this policy is coming under increasing criticism as the USA and most         European allies start to develop or even deploy BMD systems, leaving the         UK's current position looking increasingly isolated and risky,         especially as regards the protection of deployed forces. In the absence         of a land-based surface-to-air missile, and in view of its expeditionary         strategy, adaptation of the Type 45 destroyer to BMD is becoming an         obvious option.   Although no decision has yet been officially         taken, in May 2000 the Ministry of Defence said that the Type 45's were         being built with the capacity to fire BMD interceptor missiles, a         spokesman saying, "The Type 45 has been built with enough space to         put in longer missiles. What would be needed for BMD is a booster motor.         The UK and the French have been examining this and looking at the         potential for Aster to be turned into a BMD missile."
                                                
              Artist's impression of an Aster 30 missile intercepting a Scub               tactical ballistic missile.
                             Unfortunately, with the exception of the Sampson multi-function radar,         the various PAAMS components don't currently have a very great potential         for the BMD task compared with systems such as the American         AEGIS/Standard missile combination.  However it's believed that it         will be possible to give PAAMS a theatre anti-ballistic missile (ATBM)         capacity in the future.  Work started in May 2000 on a very limited         "block 1" ATBM capability by Eurosam for France and Italy         utilising the land-based equivalent of PAAMS - the "Land SAAM         AD" system (formerly called "SAMP/T").  This         capability should become available in 2004-5 and will be able to deal         with unsophisticated threats such as Scud tactical ballistic missiles         which have a range up to 600km and follow a simple ballistic         trajectory.           It's hoped to follow this with a "Block 2" version capable         of dealing with much more sophisticated and longer-range (1,000+ km)         ballistic missiles, this will use a new "Aster 45" missile         with an enlarged booster stage and if the go-ahead is given in 2002 it         could enter service around 2010-2012.  As of June 2005, Aster 45          has no firm timeline.
                                              
             
              [Click on image for larger picture]
              Illustration from the 
Sunday               Times of 6/5/2001 showing how a Type 45 could operate in a BMD               role.
                             
At the moment Aster Block 1 and 2 are land-only systems,         but relevant parts of the "Block 2" system could be adopted by         the UK (and the other partners) in to a proposed navalised Block 3 to         give PAAMS on the Type 45 destroyers an ATBM capability (sometimes         designated ABM-PAAMS or PABMS).   This capability would         approach that of the USN's Navy Area Defense (NAD) system which will         enter service on AEGIS equipped cruisers and destroyers armed with the         Standard SM2 Block IVA missile from 2003.  NAD is a so called         "Lower Tier" solution and will be able intercept ballistic         targets in their final descent phase, within the lower half of the         appreciable atmosphere, and provide protection to vital areas ashore         such as ports, airfields and cities within range of the defending ship -         up to about 100 nautical miles.
         The USN was also developing an "Upper Tier"         Anti-Ballistic Missile (ABM) capability to be based on the new Standard         SM-3 missile.  This Navy Theater-Wide (NTW) system was to be         capable of ascent- and mid-course phase intercepts of ballistic targets         outside the atmosphere, and in so doing provide much wider protection         (hence 'theatre-wide') than is being considered for PAAMS.  NTW was         to be deployed from 2007 but technical problems and cost escalation lead         to cancellation in early 2002.
         
         MISC
         In a huge grey building on Portsdown Hill, near Portsmouth, BAE Systems’         has been          developed the Maritime Integration Support Centre (MISC).  This is          being used to try out combat, control and command systems for the Type          45 destroyers, and later on the Future Aircraft Carriers, sparing the          ships long months of tests and trials at sea.   A dedicated          computer complex will put the ships’ sophisticated radar and          command systems through their pace, including early versions of the          Principal Anti-Air Missile System.
         A full LRR mast structure has already been installed at MISC,  and a fully          outfitted Sampson Multi-Function Radar (MFR) foremast structure  was built by VT and accepted by BAE Systems just before Christmas          2004.                  
                                       
              The Type 45 long range radar (LRR) antenna and mast module at the                Maritime Integration and Support Centre (MISC)  in early                2005.  (
BAE Systems).
                             ."Without a centre like the MISC, it would not be possible to provide          Type 45s for the Navy in time,” said Andrew Bowden of BAE Systems’ Type          45 Project.   Using shore bases to test sea systems is not          new; the difference here is that this is much larger – we’ve got one eye          on the future.”
         The £15m complex resembles the destroyers to some degree, with a          mock-up bridge and working main and aft masts and radar fitted          eventually, as well as operations and communications rooms in the heart          of the building.
         Already working is an early version of the computer tracking system,          complete with three full-colour screens which allows an operator to keep          tabs on targets and friendly forces.
         There will be around 25 such consoles in the real Type 45 operations          room, which will be much less dark and cramped than Type 42, 23 and          carrier equivalents.
          
                                
Combat System
         First delivery by          Alenia Marconi Systems (AMS, now BAE Systems Insyte)         of          functional CS software to the Type 45 Prime Contract Office (PCO) for          use by UKAMS took place in August 2003.          The final delivery was originally scheduled for June          2005, and will be used to support the first Longbow firing trials in the Mediterranean,          but that has slipped by about 2 years.
         The eight planned releases are          now occurring at roughly 6-9 month intervals.  The fourth         (Release 2.1.0)         was delivered in early 2005 and was the first          with full PAAMS and LRR functionality) and the fifth (2.2.0)  arrived in          November  2005 and is now being used for integration activities  .           The CS software is hosted on a 8-console mini combat management  system and enables UKAMS to integrate the Command and weapon control  element of PAAMS with          the CMS.           Elements of the Combat          Management System are now (May 2006) being tested onboard 
Longbow          and further system integration is scheduled as both the Command System          (CS) software development progresses and other Combat System Equipment (CSE)          arrives.
         In September 2003 Data Transfer Systems (DTS) software developed by Alenia Marconi Systems was         made made available to the PCO to supply to other combat system         equipment suppliers to support further CSE development at their sites.         It will also be available to the Combat System TIPT for use at the MISC.         Further deliveries of DTS tests environments have also been made to         UKAMS, via the T45 PCO, for use at UKAMS land based test facilities.          
                  
On the          meteorological and navigation system (METOC) software development has completed and a partial         system was due to complete its Factory Acceptance test in September 2003 prior         to delivery to the MISC. System integration activities for a complete         system were  scheduled to complete in October '03. This system will then         be available for delivery for the FoC in 2004.  
         
        The electo-optical gunfire control system (EOGCS) has been through its Critical Design Review and         progressing into detailed software and hardware development. The project         is on schedule and the Factory Acceptance is on target for July 2005.         Development is following an incremental process with the initial         integration and testing being performed at Frimley prior to its transfer         to the Combat System Preliminary Integration Facility (CSPIF) located at         AMS Broad Oak.  
         
        This development programme is on schedule with a reference set for the         CSPIF targetted for delivery in Mar '04. Assembly, integration and test         of the sensors is well advanced at both of AMS' sub-contractors, the         first Electro Optical Sensor Platform (EOSP) factory acceptance from         Radamec is scheduled for September '03 and by the end of the year AMS         will have taken acceptance of a further two sub systems. The programme         for the Quick Point Device (QPD) from Sofresud was on schedule for         delivery of the first sub system in Jan '04. Both the EOSP and QPD will         be used at the CSPIF to complete EOGCS system integration.  
                  
        The Combat System Trials Integrated Project Team (CS TIPT) continues to         make good progress on early system integration opportunities. Using the         existing facilities within Team 45 the TIPT have successfully commenced         integration testing well in advance of equipment production and system         delivery between the CMS and RESM, NAVS and PAAMS C2. Further         opportunities are scheduled as both the CS software development         progresses and other Combat System Equipment (CSE) become available.
          
         
         PAAMS Trails
         It was announced in September 2001 that British Marine Technology (BMT)         had been awarded a £12m contract by UKAMS (a wholly owned subsidiary of         Matra-Bae) to supply and operate a Sea Trials Platform in order to support the development and on-range          testing of the UK variant of the Principal Anti-Air Missile System (PAAMS) for the Royal Navy's          new Type 45         destroyers.          BMT were to repair, convert and commission the specialist Ministry of Defence          missile trials barge LONGBOW, formerly the salvage barge '
Dynamic Servant',         which was purchased by MoD in 1984 for service as the test platform for         the Sea Wolf VLS missile system.  On completion of those trials, in 1989
         Longbow was laid up in Brixham harbour.  The trials barge is          108 metres long and displaces 12,000 tonnes (8,145 tonnes gross), and          has a crew of about 12 plus the trails team.
                            
             Longbow at Portsmouth in July 2005, the mast is in place but the Sampson radar still not              installed.
                                      BMT Marine Procurement Ltd subcontracted the repair and conversion         work to naval ship repair group Fleet Support Limited (FSL). 
         Longbow (designated STP-2)was towed to Portsmouth in September 2003 to undergo what was           then expected to be 8 month         refit, FSL overhauling all the existing machinery and equipment, and          upgrading the accommodation and life-saving aspects of the vessel to          current Lloyd's Register Classification Standards.           
                  Work started in earnest in         April 2004 and         by May 2005 FSL in Portsmouth was completing refurbishment (which proved to          be far more extensive than expected) and conversion work on the 
Longbow.  As part of the conversion, a 25-metre tall replica Type 45          foremast was added.  Work then practically halted for a a          year but in September 2006 the second pre-production Sampson          multifunction radar was installed on 
Longbow (mounted 35m above          the waterline) following completion of its trials and qualification          activities at BAE Systems.  This was followed by the fitting of an          eight cell Sylver A50 missile silo - including all the          associated equipment - and the integration of the missile and radar systems. 
                                     
             Longbow arriving at Toulon, November 2007
                                      Actual         missile firing trials  were originally scheduled to take place off Aberporth,          commencing in mid-2005, but in 2003 the plan was changed to using the          French Centre d'Essais de Lancement Missiles (CELM) test range,        near Toulon in the South of France.      In October/November 2007 STP-2  
Longbow was towed to          the Mediterranean and by the end of the 2007 was moored to a large buoy on the edge of the Banc du          Magaud in waters up to 200m deep.  With a turntable on the top, the          buoy will permit 
Longbow to rotate around it, thus missile          testing need not be delayed by the tide and weather.
                   
         
         First          Firing
         After instrumentation and calibration of STP-2 was completed, live firing          trials of the Aster 15 and the Aster 30 anti-air missiles commenced.
         The Royal Navy’s Principal Anti-Air Missile System (Sampson) was           first test fired for the first time on 4 June 2008 from the trials barge         
Longbow at the French DGA’s CELM test range near the Ile du          Levant off the French coast.  The trial comprised the firing of a          single Aster 30 missile, launched against a Mirach target simulating an          aircraft flying travelling at 450 mph and at a 10km altitude.  The          Aster missile successfully achieved a direct hit on the target at 35km          range. 
         In a supporting press release, MBDA said that "all the PAAMS (S)          system elements have been set to work on the first of class Type 45, HMS         
Daring and system integration is now in progress. Deliveries of          PAAMS equipment to the second Type 45, HMS 
Dauntless, are          complete. The next PAAMS(S) firing trial is planned in the second half          of the year with the final system firing trial to take place in 2009. "
                  Upon completion of the PAAMS trials, BMT will          decommission 
Longbow and the PAAMS equipment will be returned to          MoD, some of which will then be fitted to HMS
 Daring or her          sisters