Harpoon Block II expands the capabilities of the Harpoon anti-ship weapon. Harpoon, the world's most successful anti-ship missile, features autonomous, all-weather, over-the-horizon capability.
Harpoon Block II provides accurate long-range guidance for land and ship targets by incorporating the low-cost inertial measuring unit from the Boeing Joint Direct Attack Munition, or JDAM, program; and the software, mission computer, integrated Global Positioning System/Inertial Navigation System and the GPS antenna and receiver from the Standoff Land Attack Missile Expanded Response, or SLAM-ER.
Harpoon Block II is capable of executing both land-strike and anti-ship missions. To strike targets on land and ships in port, the missile uses GPS-aided inertial navigation to hit a designated target aimpoint. The 500-pound blast warhead delivers lethal firepower against a wide variety of land-based targets, including coastal defense sites, surface-to-air missile sites, exposed aircraft, port/industrial facilities and ships in port. For conventional anti-ship missions, such as open ocean or near-land, the GPS/INS improves midcourse guidance to the target area. The accurate navigation solution allows users to discriminate target ships from islands or other nearby land masses or ships. These Block II improvements maintain Harpoon's high hit probability even against ships very close to land.
The multi-mission Block II is deployable from all current Harpoon missile system platforms with either existing command and launch equipment or the new Advanced Harpoon Weapon Control System, or AHWCS.
Block II is in production at Boeing facilities in St. Charles, Mo.
For more information, read the following overviews:
Harpoon Block II (PDF)
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