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2 companies

Nortek AS WEB site

Location not listedUpdated Dec 2002

Nortek AS develops advanced underwater instruments such as Acoustic Doppler Current Profilers (ADCPs) and Doppler Velocity Logs (DVLs) used for oceanographic research, subsea navigation, and marine operations.

RD Instruments

San Diego, CA, United StatesUpdated Feb 2004

RD Instruments is the industry's premium supplier of acoustic Doppler instrumentation. RDIs ADCPs are used to profile currents in 1 to 6000 meters of water. RDIs Doppler Velocity Logs are in use around the globe providing precision navigation capability for ROVs, AUVs, submarines, tow vehicle, and surface vessels.