The Canadian Navy has awarded a $154.8m contract to Raytheon Company to conduct 30 sets of overhauls and convert 21 Phalanx close-in weapon systems (CIWS).

The Phalanx CIWS is an anti-anti-ship missile system that shields ships and their crews from threats such as standard and guided artillery, helicopters, floating mines and a variety of shore-launched, anti-ship missiles.

Under the contract the company will convert the Phalanx block 1B Baseline 0 to a Baseline 1 configuration and will provide repair services and spares, as well as additional engineering and technical support.

The system is especially effective against swarming attacks by small, fast gunboats.

The block 1B Baseline 1 enhances the potential of the weapon to fight high-velocity, manoeuvring anti-ship missiles.

Raytheon Technical Services customised engineering and depot support vice president Wayne Iurillo said that the support will continue until 2017.

The work will be carried out at the company’s facility in Calgary, Alberta.