The Principal Anti Air Missile System (PAAMS) is a joint French/Italian/British program for a naval anti-aircraft weapon. The prime contractor is EUROPAAMS, a joint venture between Eurosam (66%) and MBDA subsidiary UKAMS (33%). MBDA also owns 66% of Eurosam, in effect giving it a 77% share of the project.
Irreconcilable differences in the design required lead to the UK leaving the project in October 1999. However, although now pursuing a national warship design, the UK remained committed to PAAMS. In 2003 the UK ordered five more PAAMS systems to allow the construction of the first six ships to progress.
Two additional PAAMS systems were also ordered by France and Italy in 2003 for their Horizon class frigate.
The system will provide a step change in capability over current systems, e.g the Type 42's Sea Dart missile which is vulnerable to low level and saturation attacks. The Aster missiles were designed from the outset to intercept sea-skimming missiles and coupled with the SYLVER launcher, PAAMS can launch 8 missiles in 10 seconds.