The U.S. Navy has tested a revolutionary dive suit system, the Deep Sea Expeditionary with No Decompression (DSEND), which offers enhanced flexibility and safety for deep sea divers. The DSEND suit maintains steady internal pressure, eliminating the risk of decompression sickness and allowing divers
to work for extended periods at great depths. The suit’s design facilitates natural movement, reducing diver fatigue, and its future development includes at-sea testing in realistic environments.
Sponsored by the Office of Naval Research — in partnership with Naval Sea Systems Command , Naval Undersea Warfare Center and Naval Surface Warfare Center Panama City — DSEND recently underwent demonstrations at NSWC Carderock Division in Maryland and at the Navy Experimental Diving Unit in Florida.
The deeper divers descend, however, the greater the danger from increasing water pressure. In deep-water situations, Navy divers use a saturation system, or diving bell, that is pressurized with gas so the pressure inside the bell matches outside pressure. “Because DSEND maintains one consistent pressure atmosphere, the diver is never exposed to the negative physiological effects associated with deep diving, such as decompression sickness, cold and wet exposure,” said Paul McMurtrie, NAVSEA diving systems program manager. “A diver can work for long periods of time in deep water and rapidly return to the surface.”
“DSEND will allow divers to conduct harder missions by going deeper, executing faster and operating longer,” said Tom Hansen, a research engineer at NUWC Division Newport, “all while being protected by a sensorized suit of armor. It feels like we’re developing the futuristic smart armor you see in movies.”
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