After departing from Norfolk,Virginia on 31 January,the guided missile destroyer USS Donald Cook(DDG 71) arrived at its new homeport of Rota,Spain on 11 February.The ship is the first of four US Navy destroyers that are being moved to Rota.The USS Ross will follow later in 2014,and the USS Carney and USS Porter in 2015.
These warships have been or will be modified for ballistic missile defence,armed with SM-3 missiles that,together with the shipboard Aegis defence system,can detect,seek and destroy certain types of short and medium range ballistic missiles.A total of 18 Arleigh Burke class destroyers were initially selected for the modification,and more are expected to follow.*
The SM-3 was developed by the Missile Defense Agency from the SM-2 ER Block IV missile for sea-based defence against ballistic missiles in midcourse flight.The upgrade consists of a third stage;a GPS/inertial guidance system;and a Boeing kinetic warhead.
Besides destroyers,the SM-3 will be deployed on guided missile cruisers and Japanese destroyers.A version will also be deployed to European land bases.The SM-3 has intercepted and destroyed several test targets.
The Arleigh Burke class destroyers are also armed with Harpoon and Tomahawk missiles,5-inch guns and torpedoes.*
Boeing(BA)
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