2018-05-01
The Gun of Choice – Mk110 Set to Board U.S. Navy Littoral Combat Ships
BAE Systems was recently awarded a contract by General Dynamics to provide two additional Mk110 Naval Gun Systems for the Independence variant of the U.S. Navy’s Littoral Combat Ship (LCS). The additional guns are part of a follow-on to a current contract, bringing the total number of Mk110 systems to 15 for the Independence variant.
The fully automatic Mk110 gun system, known internationally as the Bofors 57Mk3, is the deck gun of choice for the LCS. It is a multi-mission, medium-calibre shipboard weapon, effective against air, surface, or ground threats without requiring multiple round types. The system is capable of firing up to 220 rounds per minute at a range of more than nine nautical miles using BAE Systems’ six-mode programmable, pre-fragmented, and proximity-fused (3P) ammunition.
“BAE Systems’ Mk110 Naval Gun, together with our advanced 3P programmable multi-purpose ammunition, provides a unique capability to address multiple air, sea, and land threats,” said Lena Gillström, general manager of Weapon Systems Sweden at BAE Systems. “This additional Mk 110 order for the LCS is evidence that this system is among the best medium-calibre naval guns in the world. Sailors benefit from its adaptability, robust endurance, and pointing accuracy, even in high wind waves and swells.”
Deliveries are expected to take place during 2019 and 2020. The 57-millimeter Mk110 is currently in service with the Navy’s LCS and the U.S. Coast Guard’s National Security Cutter. Also selected for the Coast Guard’s new Offshore Patrol Cutter, the Mk 110 has been proposed for the U.S. Navy’s future frigate FFG(X) programme. To date, BAE Systems has 28 Mk110 guns contracted to the U.S. Navy and 11 to the Coast Guard. Worldwide, there are 86 Mk110/57Mk3 naval gun systems under contract with eight nations.
Ensuring Survivability
The 57MM Mk110 provides high survivability and tactical freedom at all levels of conflict. In the littoral scenario the gun must have the capability to engage threats that were impossible to engage with conventional gun systems. Survivability in such an environment requires an extremely flexible weapon system. The 57mm Mk110 has this flexibility, which is proven by the fact that it is the deck gun of choice for the U.S. Coast Guard’s National Security Cutter and offshore patrol cutter classes of ships, as well as for the US Navy’s LCS ships.
The Mk 110 Mod 0 Naval Gun delivers high rates of fire with extreme accuracy against surface, airborne, and shore-based targets, with proven effective 6-mode programmable 57mm Mk 295 Mod 0 ammunition.
The gun system is lethal and fires automatic salvos at up to 220 rounds per minute. Plus, it is linked with a digital fire control system, and responds to exact pointing orders and selected ammunition fuze option an instant before each round is fired.
The Mk 110 weather shield provides environmental and ballistic protection for the gun system, and the design can be tailored to meet specific platform signature requirements. Also, it requires minimal manpower for operation and maintenance, and affords unmatched availability through high-level redundancy, built-in test functions, ready component access, and on-board tools and spares.
Plus, the highly compact and lightweight Mk 110 Mod 0 requires minimal deck penetration and space below deck for ease in integration to a variety of hull types of 150 tons or more.
ORKA Guided Projectile
ORKA - Mk295 Mod 1 57mm Guided Projectile enhances the in-service Mk295 Mod 0 (3P) round by adding a guidance capability to the already highly-lethal projectile. It incorporates a reliable and affordable 4-canard actuation system, to guide the round; a multi-mode imaging seeker; and a high explosive warhead to enable single shot defeat of Anti-Surface Warfare (ASuW) and Anti-Aircraft Warfare (AAW) threats.
The 57mm Mk110 Gun System is capable of delivering the ORKA at a maximum rate of 220 rounds per minute to 10km. The warhead delivers 1.4kg of lethal steel fragments in reaction to over 200 grams of PBXexplosive. Accurate to within one meter, the warhead achieves devastating effects against a wide range of ASuW and AAW target types in any selected mode of fuze and seeker operation.
Its fuzing modes include timed, proximity, and point detonation. The projectile’s multi-mode imaging seeker is capable of detecting a laser designator and autonomously identifying specific ASuW and AAW targets.
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