Naval News reports,

April 8, 2025—Epirus announced today the introduction of Leonidas H2O, a, high-energy, high-power microwave (HPM) system developed to counter boat motors, unmanned surface vessels (USV) and unmanned aerial vehicles (UAV). The system is built using the scalable Leonidas energy-based, high-power microwave technology platform.

Leonidas H2O demonstrated effectivity against vessel motors at record ranges during the U.S. Navy’s Advanced Naval Technology Exercise Coastal Trident (ANTX-CT) program, during which the system was tested against four commercially available vessel motors ranging from 40 to 90 horsepower at a multitude of ranges.

The Company website is here.

Watch the video. Looks like something the Coast Guard might be interested in.