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The Office of Naval Research's Navy Undersea Research Program (NURP), in collaboration with the National Science Foundation, sponsors science and engineering graduate students pursuing thesis topics in core undersea weaponry technology areas.

The Ocean Battlespace Sensing Department explores science and technology in the ocean battlespace environment.

The Office of Naval Research Undersea Weapons Program develops technologies for current and next-generation, offensive and defensive weapons capable of engaging submarines, surface ships and threat torpedoes.

Retired U.S. Navy Capt. Don Walsh, best known for his daring dive to the deepest spot on Earth, nearly 36,000 feet below the ocean’s surface, has died at age 92. Walsh was a co-pilot of the Trieste bathyscaphe, a deep submergence vehicle acquired by the Office of Naval Research (ONR) in 1958. Two years later, on January 23, 1960, Walsh and Swiss engineer Jacques Piccard, son of the inventor of the bathyscaphe, became the first humans to descend into the Challenger Deep, located in the Pacific Ocean’s Mariana Trench. “ONR sponsored the Trieste, but it was then-Lt. Don Walsh who made the very daring decision to make the first descent into the deepest spot of the earth’s ocean. Walsh was a Navy officer, a submariner, an adventurer, and an oceanographer. To his family, we extend our deepest condolences and gratitude for allowing him to explore, and share his extraordinary experiences and knowledge with us,” said Chief of Naval Research Rear Adm. Kurt Rothenhaus.

The Undersea Systems Focus Area addresses innovative affordable, persistent and stealthy undersea systems that leverage the asymmetric U.S. Navy advantage afforded by subsurface operations.​

The goal of the Office of Naval Research's Undersea Signal Processing program is to develop signal processing algorithms that improve the Navy's ability to detect, identify and locate submarines in shallow and deep ocean environments.