Dramatic Sinking: Sub-Launched Missiles and Kamikaze Drone Destroy Peleliu

In a powerful display of naval strength during RIMPAC 2026, two submarine-launched Harpoon missiles slammed into the decommissioned USS Peleliu off the coast of Hawaii. The 40,000-ton Tarawa-class amphibious assault ship served as the target in a major sinking exercise designed to test live-fire capabilities. Additional strikes from Spanish and Japanese weapons further battered the massive hull. The exercise also featured a first-of-its-kind use of a kamikaze unmanned surface vessel in a U.S. SINKEX.

The coordinated attack highlighted the growing integration of traditional and unmanned systems in modern naval warfare. After enduring multiple missile hits, the Peleliu was struck by the explosive drone boat, which detonated at the waterline. This marked the debut of such a kamikaze USV in an official American sinking exercise. The successful operation demonstrated the Navy’s ability to combine submarine firepower with emerging drone technology.

RIMPAC remains the world’s largest multinational maritime exercise, bringing together allies to sharpen skills and strengthen interoperability. The sinking of the Peleliu showcased precision targeting, multi-nation coordination, and the effectiveness of both legacy weapons like the Harpoon and new unmanned platforms. These realistic drills ensure U.S. and partner forces stay ready for high-end conflict in the Pacific.

This kind of live-fire training sends a clear message about American and allied combat readiness. By putting advanced systems to the test against a large, realistic target, the Navy continues to refine the tactics needed for future operations. Strong, capable forces backed by cutting-edge tools remain essential for deterring aggression and protecting national interests.