Testing the waters: A day at the nation’s largest oil spill simulation tank Located at Naval Weapons Station Earle Waterfront in Leonardo, New Jersey, the National Oil Spill Response Research and Renewable Energy Test Facility (Ohmsett) features a massive 2.6-million-gallon outdoor saltwater tank that serves as the nation’s testing ground for evaluating full-scale oil spill response equipment and marine technologies under realistic ocean conditions. (Image credit: Bureau of Safety and Environmental Enforcement, bsee.gov) Download Image August 20, 2026 Ocean & Coasts 0 Off