McLane Research Laboratories Device / Instrument
Prawler
Low-cost, wave-actuated vehicle that climbs the mooring wire and collects CTD, backscatter and oxygen data from the surface to 500 m.
Description
The Prawler (PRofiling crAWLER) is a wave-actuated vehicle that moves along the mooring wire using wave motion and ratcheting clamps, then free-falls through the programmed profiling range collecting measurements. Data can include conductivity, temperature, depth (CTD), optical backscatter and dissolved oxygen. Sensors are powered by primary lithium batteries and data is offloaded via inductive communications.
Key features
- Deployment depth: water up to 6000 m (data collection at 0 m – 500 m)
- Operating temperature: -2° C-35° C
- Fall rate: ~ 30 cm/sec
Applications
- Upper-ocean profiling (0–500 m) on moorings in deep water
- CTD, optical backscatter and dissolved oxygen measurements
Specifications
| Deployment depth | water up to 6000 m (data collection at 0 m – 500 m) |
|---|---|
| Operating temperature | -2° C-35° C |
| Fall rate | ~ 30 cm/sec |
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