ROV Neutral buoyancy tether cable | Power & Data Transmission

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ROV Neutral buoyancy tether cable| Power & Data Transmission

A high-performance, integrated power and fiber optic cable engineered specifically for reliable surface water deployment. This buoyant hybrid cable seamlessly combines floating capability, high-speed data transmission, and remote power supply in one robust, easy-to-deploy surface cable solution.

Key Features

To withstand the unique demands of the air-water interface, our design of surface deployment cables is governed by three fundamental engineering principles:

Buoyancy-System Balance

Maintaining optimal cable flotation on water requires meticulous calculation of the dynamic balance between cable weight, payload, environmental forces, and material buoyancy to ensure stable floating posture.

Durability for Harsh Marine Environments:

Materials are selected to create a UV resistant and waterproof cable that endures relentless exposure, temperature extremes, saltwater corrosion resistance, mechanical fatigue, and anti-biofouling cable properties.

Low-Drag Deployment

The cable's low-drag cable profile and construction are optimized to minimize hydrodynamic drag, resist torsion, and ensure stable towing and retrieval of surface-deployed equipment.

Core Features

All-in-One Integration for Simplified Systems

Persistent & Autonomous Surface Buoyancy

Ruggedized Reliability for Extended Outdoor Use

Built as a weatherproof and abrasion-resistant cable, its surface-floating design avoids seabed damage. The high-visibility surface cable jacket ensures safe tracking and simplifies maintenance of floating cable systems.

Neutral Buoyancy Specifications

Standard Condition: Optimized for seawater at 35 PSU salinity and 10°C.

Performance: Achieves near-zero net buoyancy (< 0.02 N/m) for minimal drag in subsea applications.

Buoyancy Adjustability: Supports precise fine-tuning via optional buoyancy modules (density 0.3-0.95 g/cm³) or customized extruded jackets (density 0.55-1.10 g/cm³) to adapt to freshwater, high-salinity, or specific depth applications.

Key Note: Standard seawater cables will sink in freshwater. Please specify your operating medium for a perfectly balanced neutrally buoyant tow cable or instrumentation cable.

Key Structure & Composition

Floating Layer: Closed-cell foamed polyethylene with independent sealed air pockets

Conductor: Comprises insulated copper conductors, Compliant with IEC60228（VDE 0295）Class 6.

Core Construction: Layered anti-twist structure; grouped gap filling; layered stranding after twisted-pair formation.

Strength Member: High-strength, lightweight materials like aramid yarn. (Customizable tensile strength)

Fiber Optic: single-mode/multi-mode fibers

Shielding Type: Individual single-layer shield, individual double-layer shield, overall single-layer shield, overall double-layer shield, etc.

Outer Jacket: High-density polyethylene or specialty polyurethane

Color: often in orange/yellow

Number of cores x cross section	Conductor Diameter mm	Outer Diameter mm	Cable Weight kg/km	Minimum Breaking Load N
2×1	0.2	8	30	2500
2×0.086	0.1	4.1	12	1300
2×1.5+2 cores fiber	0.21	13	40	6000
CAT5	0.25	8.5	20	6200
2×0.5+(2×0.3)	0.15	9.8	22	2500
6×4+2 cores fiber	0.21	35	470	5500
3×35+2×16+2 core Single-Mode optical fiber	0.25	70	2200	12000
2×2.5+(3×2×0.3)P+4 cores Single-Mode optical fiber	0.21	18	650	2000
CAT5+2×2.5	0.21	10	80	1500
2×2.5	0.21	13	65	2000
2×1.5	0.2	9.5	50	1400
3×2×0.2	0.1	8	35	600
3×18AWG	0.15	12	38	1000