Core Technology
TBD
Key Features
- Variable-buoyancy “S-tether” geometry. The tether is engineered with buoyancy zones (sinking, neutral, floating) that naturally form an S-shape in the water column, keeping the line clear of surface currents and the vehicle during operations.
- High-strength lifting segment with reduced cable burden. A dedicated lifting segment carries launch-and-recovery loads, enabling a lighter communications/power cable section that would not otherwise be able to lift the vehicle.
- Single-drum winch compatibility through controlled bend performance. The system is designed to run through multiple sheaves and store on a single-drum winch by controlling bend radius behavior across heavy and buoyant sections.
- Protected electro-optical splice transition interface. A reinforced transition hose provides a dedicated internal volume to isolate and protect the optical/electrical splice, reducing risk of damage while still allowing bending over sheaves.
- Modular buoyancy tuning by distributed materials. Buoyancy and wet weight are tuned along the tether using layered dense materials (e.g., wire/metal layups) and buoyant additives (e.g., microspheres/floats), allowing optimization for different loads and sea states.
Technical Specifications
| Parameter | Measured Value |
|---|---|
| Lifting segment length | ~120 m |
| Peak dynamic working load | 15,000 lb |
| Minimum rated breaking strength | 45,000 lb |
| Working bend radius | 12 in ID (24 in diameter sheave) |
| Sheave compatibility | 24 in diameter sheaves; 2.5 in groove diameter |
| Termination/heavy section bend condition | Over 24 in sheave at 3,000 lb |
| Buoyant section bend endurance | 200 cycles over sheave at 7,500 lb |
| Heavy section wet weight in seawater | 0.5–3 lb/ft |
| Buoyant section buoyancy in seawater | 0.15–0.5 lb/ft buoyancy |
| Splice shell size (example) | ~1 in diameter × 7 in long (for a 1.25 in ID hose) |
| Transition/termination interface hose length (prototype example) | ~10 ft (3 m) |
Applications
- Aquaculture & Shellfish Safety. Enables earlier detection of toxic species near farms and growing areas, supporting operational decisions (harvest timing, closures, relocation) and reducing loss risk during bloom seasons.
- Drinking Water Utilities & Reservoir Management. Supports monitoring programs seeking earlier warning of HAB conditions and faster confirmation when risk indicators rise, strengthening response planning and public communication.
- Coastal Monitoring & Marine Resource Management. Helps agencies and service providers track bloom development and species composition in dynamic coastal waters where rapid change can outpace sampling cycles.
- Inland Lakes, Rivers, and Watershed Programs. Extends HAB screening into freshwater systems where blooms can affect recreation and ecosystem health, helping prioritize sampling and mitigation actions.
- Environmental Consulting & Monitoring Services. Creates a differentiated offering for firms delivering HAB surveillance, event response, and compliance support by improving confidence in identification and reporting.
- Research Labs & Field Stations. Accelerates studies of bloom initiation and plankton community shifts by pairing spectral signatures with image-based classification in a single instrument workflow.
- Industrial & Process Water Operators. Supports risk screening at intakes and in open basins where biological upsets can disrupt operations, helping operators intervene earlier and document conditions.
Development Status
TRL 5
The core technical approach integrates whole-cell non-contact micro-Raman spectroscopy with light field and darkfield microscopy to improve HAB detection and species classification.
Categories
- Impact Areas:
- Ecosystem Protection, Natural Resources, Research & Innovation
- Technology Areas:
- Sensors/Instrumentation
