The rapidCAST™ system collects sound velocity profiles while a survey vessel is underway at speeds of up to 12 knots. Automated deployment and recovery allow surveyors to collect profiles without stopping the vessel or requiring an operator on deck for each cast. The portable system provides near real-time sound velocity data to support hydrographic surveying in changing water conditions.
Underway Profiling
rapidCAST™ can profile to depths greater than 500 m at a vessel speed of 5 knots, or to 1,200 m when stationary or towing at low speed. Operators enter the target profile depth in software, and the system deploys and recovers the probe automatically. Patented line payout tension control maintains a consistent drop rate, with deep and shallow profiling modes of 5 m/s and 2.5 m/s, respectively.
Key Features
- Underway operation: Collects sound velocity profiles at vessel speeds of up to 12 knots.
- Automated casts: Deploys to a target depth and recovers the probe without an operator on deck.
- Wireless data transfer: Automatically uploads data via Bluetooth as the probe returns to its designated hold position behind the vessel.
- Portable installation: Compact deck equipment supports mobilization across a range of survey vessels.
- Depth control: Targets the selected profile depth to help prevent seabed contact.
- Probe options: Accepts a user-supplied sound velocity probe or a Valeport rapidSV, for which a dive table is integrated into the software.
rapidCAST™ has a depth accuracy of 5% at towing speeds up to 12 knots. Its automated operation and short turnaround between casts help surveyors collect sound velocity data throughout a hydrographic survey.
