Raytheon has developed considerable experience in naval systems through its role in major programmes such as DD(X), LPD 17, CVN 21, the Australian Air Warfare Destroyer, and submarines. One of the keys to successfully developing cost effective system-of-systems solutions has been alliances with industry and the customer.

In the U.K. Raytheon Systems Limited, in partnership with its sister U.S. business Raytheon Integrated Defense Systems, has drawn on this experience to offer a solution to the MoD's Maritime Afloat Reach and Sustainability (MARS) programme. RSL is also supplying the Integrated Bridge and Navigation System for the Royal Navy's new Type 45 Destroyers.

RSL also has some 60 years of experience in the supply of IFF for air, land and sea platforms and recent naval applications include the supply of IFF for ANZAC ships, the Royal Navy's Type 45 destroyers and Successor IFF for Royal Navy submarines and Type 23 frigates.