The
Low-Cost Guided Imaging Rocket was a weapons system under development for the
US Navy as part of
ONR's Low-Cost Imaging Terminal Seeker FNC. It transitioned as the weapon used in the Medusa
Joint Capability Technology Demonstration with
South Korea. The program provided a precision guided 2.75 inch (70 mm)
rocket for use with existing
Hydra 70 systems in service, as such it has many similarities with the
Advanced Precision Kill Weapon System program. The principal difference between the systems is that while APKWS uses terminal
laser homing, requiring the target to be 'painted' until impact, LOGIR would guide to a position supplied by the launching aircraft, using
imaging infrared in the terminal phase making it a true
fire-and-forget weapon. Another advantage of LOGIR was that it was "especially effective against swarm attacks by enemies like small boats, as there’s no need for ongoing guidance."