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  • marine renewable energy systems
  • response technologies
  • viscous oil



NWS Earle, 801 Route 36, Bldg. R-26
Leonardo NJ 07737

OHMSETT, located in Leonardo, New Jersey, USA provides independent and objective performance testing of full-scale oil spill response equipment and marine renewable energy systems (wave energy conversion devices).

OHMSETT is the largest outdoor saltwater wave/tow tank facility in North America and is the only facility where full-scale oil spill response equipment testing, research, and training can be conducted in a marine environment with oil under controlled environmental conditions (waves and oil types).

The facility consists of a large outdoor above-ground concrete test tank measuring 667 feet long by 65 feet wide by 8 feet deep filled with 2.6 million gallons of crystal clear salt water, conference rooms, maintenance/machine shop, oil/water chemistry laboratory, and offices.

The U.S Department of the Interior, Bureau of Safety and Environmental Enforcement (BSEE) operates the Ohmsett facility as part of its mandated requirements to ensure that the best and safest technologies are used in offshore oil and gas operations. Ohmsett is maintained and operated by MAR, Incorporated through a contract with the Bureau of Safety and Environmental Enforcement (BSEE).


OHMSETT plays a critical role in developing effective response technologies and represents an intermediate step between small scale bench testing and open water testing of equipment. Many of today’s commercially available oil spill cleanup products and services have been tested here.

The facility has the capability to test and evaluate oil spill response technologies such as: chemical treating agents and dispersants, oil in ice and cold weather climate, remote sensing and detection instruments, sorbent materials, temporary storage devices, viscous oil pumping units and oil water separators.

In addition, OHMSETT provides a venue for first responders with the most realistic hands-on training available enabling rapid and efficient response to an actual spill event.

OHMSETT’s wave generator can generate random waves that closely approximate waves in the ocean, such as sinusoidal and harbor chop, Pierson-Moskowitz, JONSWAP, and Frequency Modulated (FM) Slide, with scalable ocean water depth, wind speed, and model scale factor.

BSEE supports the development of alternative energy devices, in particular wave energy mechanical devices, in a controlled environment. The OHMSETT test tank is large enough to handle many devices at meso-scale. The advantage is that arduous scaling considerations are minimized, and validation testing is more realistic.