(LHA 6) launching a RIM-116 Rolling Airframe Missile
Block 0 The original version of the missile, called
Block 0, is based on the
AIM-9 Sidewinder air-to-air missile, whose
rocket motor,
fuze, and
warhead are used. Block 0 missiles were designed to initially home in on radiation emitted from a target (such as the active radar of an incoming
anti-ship missile), switching to an
infrared seeker derived from that of the
FIM-92 Stinger missile for terminal guidance. In test firings, the Block 0 missiles achieved hit rates of over 95%.
Block 1 The
Block 1 (RIM-116B) is an improved version of the RAM missile that adds an overall infrared-only guidance system that enables it to intercept missiles that are not
emitting any radar signals. The Block 0's radar
homing capabilities have been retained.
Block 2 The
Block 2 (RIM-116C) is an upgraded version of the RAM missile aimed at more effectively countering more maneuverable anti-ship missiles through a four-axis independent control actuator system, increased rocket motor capability to 15.8 cm (6.25–inch) diameter, an improved passive radio frequency seeker and upgraded components of the infrared seeker, and advanced kinematics. On 8 May 2007, the U.S. Navy awarded Raytheon Missile Systems a $105 million development contract. Development was expected to be completed by December 2010. LRIP began in 2012. Fifty-one missiles were initially ordered. On 22 October 2012, the RAM Block 2 completed its third guided test vehicle flight, firing two missiles in a salvo and directly hitting the target, to verify the system's command and control capabilities, kinematic performance, guidance system, and airframe capabilities. Raytheon was scheduled to deliver 25 Block 2 missiles during the program's integrated testing phase. The Block 2 RAM was delivered to the U.S. Navy in August 2014, with 502 missiles to be acquired from 2015 to 2019.
Initial Operational Capability (IOC) for the Block 2 RAM was achieved on 15 May 2015. In early 2018 the U.S. State Department approved the sale of RIM-116 Block II to the
Mexican Navy for use on their future
Sigma-class design frigates, the first of which was jointly built by
Damen Schelde Naval Shipbuilding and launched in November 2018.
Block 2B At the IndoPacific 2025 Convention in Sydney, in interview with Naval News a Raytheon Australia representative declared the Block 2B was operational and on offer to the Royal Australian Navy as part of the Enhanced Mogami Build. In the same interview the Raytheon Australia representative gave the publicly disclosed range of the Block 2B as 10 Nautical Miles.
HAS mode In 1998, a
memorandum of understanding was signed by the defense departments of Germany and the United States to improve the system so that it could also engage so-called "HAS",
Helicopter,
Aircraft, and
Surface targets. As developed, the
HAS upgrade just required software modifications that can be applied to all Block 1 RAM missiles.
SeaRAM weapon system (LCS 30)|330x330px The SeaRAM combines the radar and
electro-optical system , one SeaRAM is fitted to each
Independence-class vessel. In late 2014, the Navy revealed it had chosen to install the SeaRAM on its
Small Surface Combatant LCS follow-on ships. Beginning in November 2015, the Navy completed installation of a SeaRAM on the first of four s patrolling within the
U.S. 6th Fleet. The SeaRAM will equip the
Royal Saudi Navy's multi-mission surface combat (MMSC) based on the s. ==General characteristics==