Manta Ray: New Underwater vehicle

Northrop Grumman Corporation's Manta Ray UUV program is a highly advanced, full-size uncrewed underwater vehicle prototype that has been designed to operate long-duration, long-range, and payload-capable undersea missions without the need for human logistics support. This new class of UUV has been developed through a Defence Advanced Research Projects Agency (DARPA) program and is equipped with several novel design attributes that significantly advance the technologies required for future UUV designs.

The Manta Ray program aims to demonstrate critical technologies that enable payload-capable autonomous unmanned underwater vehicles to operate independently in ocean environments for extended durations on long-range missions. The program's Phase 1 included preliminary testing on novel approaches to energy management, UUV reliability, biofouling and corrosion control, navigation, and undersea obstacle avoidance, among other areas.

DARPA has awarded Phase 2 contracts to continue the program, where the selected performers will work on subsystem testing followed by fabrication and in-water demonstrations of full-scale integrated vehicles. These efforts will focus on developing novel energy management techniques, low-power and high-efficiency undersea propulsion systems, underwater detection and classification of hazards or counter-detection threats, mission management approaches, leveraging existing maritime datasets, and new approaches to mitigate biofouling, corrosion, and other material degradation for long-duration missions.

The Manta Ray UUV is a modular system that makes it easy to transport with five standard shipping containers for deployment worldwide. The UUV is also energy-saving and autonomous, allowing it to anchor to the seafloor and hibernate in a low-power state, eliminating the need for on-site human logistics support or maintenance.

To facilitate energy harvesting, Northrop Grumman has partnered with Seatrec, a renewable energy company, to develop the "Mission Unlimited Unmanned Underwater Vehicle (UUV) Station." This setup harnesses the ocean's thermal gradient to generate continuous power, enabling extended missions over vast distances and durations.

The Manta Ray UUV's payload capability makes it an essential component of subsea warfare and the Department of Defence’s Joint All Domain Command and Control vision. It can simultaneously introduce a new class of underwater vehicle while contributing key component technologies to other vital undersea programs.

Overall, the Manta Ray UUV program has made significant breakthroughs toward enabling payload-capable autonomous underwater vehicles to operate independently of crewed vessels or support infrastructure. The program's two prime contractors, Northrop Grumman Systems Corporation and Martin Defence Group, are each developing unique full-scale demonstration vehicles. The Manta Ray UUV's advanced design attributes push the envelope for future UUV designs, making it a critical component of subsea warfare and other vital undersea programs. Having diverse UUV capabilities will be crucial in future maritime conflicts, and technologies like Manta Ray could greatly impact underwater operations, especially considering the current scenarios where countries like China are heavily investing.