USN Divers do not have a certifiable Contaminated Water Diving System to support salvage and humanitarian relief operations in Category 1 (CAT1) contaminated water environments. Paragon has developed the Paragon Dive System (PDS), which is a chemically-compatible diving system for full CAT1 diving environment isolation, IAW the USN General Specification for the Design, Construction and Repair of Diving and Hyperbaric Equipment (NAVSEA TS500-AU-SPN-010) and USN Diving and Manned Hyperbaric Systems Safety Certification Manual (SS521-AA-MAN-010). The PDS incorporates a surface return panel, return umbilicals, modified Viking dry suits, and KM37 dive helmets modified with a Regulated Surface Exhaust (RSE) system; the PDS is designed to allow for three divers to operate in CAT1 contaminated water while remaining completely isolated from the surrounding environment. The Navy Experimental Diving Unit (NEDU) is currently testing the PDS to advance the TRL. Two surface control panels, five suits, six helmets, and umbilicals have been built.