Long-endurance UUV demonstrates submerged launch capability during Navy exerciseNewsDan Taylor Technology Editor Military Embedded SystemsLantern Fish via RTXPORTSMOUTH, Rhode Island. Raytheon and Composite Energy Technologies demonstrated the submerged launch capability of HADALUS, a 34-foot unmanned undersea vehicle (UUV), during a U.S. Navy exercise, Raytheon announced in a statement. The vehicle completed a series of missions on a Navy undersea test range, including operations while submerged, the statement reads. The UUV uses a free-flooded carbon-fiber exoskeleton designed to support payload capacity while reducing vehicle cost. The effort included integration of the launcher, sonar, electronics, and other mission systems before the Navy exercise.