BRIEFING: SeaRAM combines the Ku-band high-resolution
search-and-track radar of the MK 15 Phalanx Close-in Weapon
System (CIWS) Block 1B Baseline 2 and the thermal imager of the
Block 1B with the extended range, high maneuverability and accuracy of the RIM-116A RAM system. The SeaRAM system replaces
the CIWS 20mm gun with an 11-round RAM launching guide,
enabling the system to engage higher speed, more maneuverable
anti-ship cruise missiles and surface targets at longer ranges. The
benefits of SeaRAM include eliminating or simplifying combat-system integration, providing firm track ranges that support maximum range RAM engagements and achieving rapid reaction time
by coupling high-rate sensors into the RAM launcher. SeaRAM has
been installed on the Independence-class LCSs.
WEIGHT: ....................... 16,901 pounds above deck, 1,200 pounds
HEIGHT: ....................... 15. 8 feet
AMMUNITION:.............. 11 RIM- 116 RAM missiles
CONTRACTOR: ...........Raytheon Missile Systems
SEQ- 3 LASER WEAPON SYSTEM
BRIEFING: The SEQ- 3 is a prototype directed-energy weapon
system that uses a solid-state laser to disable or destroy aerial
and surface targets such as unmanned aerial vehicles and fast
attack craft. The laser is controlled at a single console.
The 30-kilowatt SEQ- 3 was developed as a Quick-Reaction Capability by the Office of Naval Research (ONR). The laser was tested at sea in 2012 onboard the destroyer USS Dewey. ONR’s Solid-State Laser Maturity Program is developing more capable directed-energy weapons through industry teams led by Northrop Grumman, BAE Systems and Raytheon. One design will be selected in
2015 for demonstration in 2016. The Navy plans to install the weapons on littoral combat ships, destroyers and other ships in 2016.
The SEQ- 3 was installed in mid-2014 on the forward superstructure of the Navy’s interim Afloat Forward Staging Base ship
USS Ponce, based in the Persian Gulf.
SHORT-RANGE SURFACE-TO-SURFACE MISSILES
BRIEFING: The Navy joined the Army Non-Line-of-Sight Launch
System (NLOS-LS) program in August 2006 to develop the NLOS
for the surface warfare mission package of the LCS. The Army canceled its participation in NLOS in 2010 and program management
was transferred to the Navy. The Navy selected the Griffin missile
as an interim solution for the LCS mission package, but dropped
it in 2014 in favor of the Hellfire. The Griffin also has been integrated in a MK 60 Patrol Coastal Missile System, which includes a
laser targeting system. (See the Aircraft Weapons section.)
MK45 GUN MOUNT
BRIEFING: The 5-inch/54-caliber Mk45 Mod 2 gun mount is a
lightweight, single-barrel, fully automatic gun system that provides surface ships with a weapon for firing 70-pound projectiles
at surface craft, low-altitude aircraft and shore targets. It serves as
the main gun battery aboard destroyers and cruisers. The battle
stations of the six-man gun-mount crew are below the weather
deck. In a tactical emergency, one crew member can activate the
mount and rapidly aim and fire up to 20 conventional rounds.
The Mk45 gun mount also has been manufactured for the
Australian, Turkish, Hellenic, New Zealand and Thai navies.
The U.S. Navy developed modifications to the Mk45 Mod 2
gun — a 5-inch/62-caliber Mk45 Mod 4 gun — designed to meet
emerging requirements for highly accurate, longer-range fires by
employing the Extended-Range Guided Munition (EX 171
ERGM). The ERGM, designed by Raytheon to reach ranges up to
63 nautical miles, was canceled in 2008 because of development
problems. In 2008, the Navy, in conjunction with Alliant Techsystems Inc. (ATK), completed a demonstration of the rocket-powered Ballistic Trajectory Extended-Range Munition, which
reached ranges in excess of 50 miles.
A 5-inch version of the Long-Range Land Attack Projectile
(LRLAP) is being developed to give the Mk45 the ability to
strike targets at ranges that exceed 50 nautical miles. The Mod
4 gun is being installed on the Arleigh Burke-class destroyers from
DDG 81 forward. In addition, Mk45 guns onboard some
Ticonderoga-class cruisers are being modified to the Mod 4 configuration under the Cruiser Modernization Program.
5-INCH/54-CALIBER MK45 MOD 2 GUN MOUNT
SEQ- 3 LASER WEAPON SYSTEM