DVL 500

Nortek DVL 500 is a 500 kHz Doppler velocity log for deep-water navigation and survey platforms. Its four-beam convex Janus transducer tracks the seabed from 0.1 to 200 metres altitude and provides long-term bottom-velocity accuracy of ±0.1 percent plus ±0.1 centimetres per second in the controlled configuration. The titanium and polymer housing is rated to 6,000 metres.

The instrument also performs water tracking and simultaneous current profiling to 70 metres, providing a velocity fallback when the bottom leaves range and adding opportunistic oceanographic data. Ethernet or serial interfaces connect DVL 500 to leading inertial-navigation systems and vehicle software. Nortek specifies average power of three watts at one-hertz sampling, a seven-kilogram dry weight and use across long-endurance AUVs, large ROVs and other survey platforms.