PORTSMOUTH, Rhode Island — Raytheon and Composite Energy Technologies (CET) have successfully demonstrated the undersea launch capabilities of Hadalus, a new, low-cost, long-endurance unmanned undersea vehicle. During a recent U.S. Navy exercise, the UUV completed a series of at-sea missions on a Navy undersea test range, successfully demonstrating its undersea launch capabilities while submerged. Designed to cost roughly one‑third to one‑fifth of comparable long‑endurance vehicles, Hadalus offers a scalable path to fielding affordable undersea capabilities. In less than 18 months, Raytheon and CET progressed from a conceptual sketch to a complete prototype successfully demonstrated in water. This was driven by investment from both companies in the design and build of the vehicle, integration of the launcher, sonar and electronics and full system testing leading up to the exercise.