Ultra Flexible ROV Tether
Ultra Flexible ROV Tether
Custom Neutral Buoyancy ROV Cables
Ultra Flexible ROV Tether Cable is a specialized underwater cable designed for ROV, AUV, and underwater monitoring applications that require exceptional flexibility, neutral buoyancy, and reliable performance during continuous deployment and recovery operations. The flexible construction allows the cable to withstand repeated bending, towing, and movement caused by underwater currents, making it suitable for long-term operation in both seawater and freshwater environments.

Custom Cable Solutions | Flexible MOQ | Fast Lead Time |
Key Features
Floating Capability: Engineered with a specific gravity close to that of the operating medium (freshwater: 1.0 g/cm³ / seawater: 1.02–1.03 g/cm³).
Tensile Strength: Standard tensile load range of 200 kg to 500 kg, with custom options available up to 1000 kg or higher.
Signal Transmission: Features an 8-core configuration (typically 4 twisted pairs) that supports Ethernet protocols for industrial data transmission requirements.
Dynamic Flexibility: Designed with a dynamic bend radius of 5D to 8D and a flex life of 5 to 10 million cycles, making it suitable for drum winches and high-frequency bending applications.
Specifications
Item | Specification |
Conductor | Fine-stranded, extra-flexible tinned soft copper wire |
Conductor Standard | IEC 60228 (VDE 0295) Class 6 |
Insulation | TPE, TPV, XLPE, DPEM |
Core Structure | Anti-twist layering, grouped gap filling, twisted pairs, and layered binding |
Optical Fiber | Single-mode / Multi-mode, 6–24 fibers |
Shielding | Individual Pair/Unit Shielding (aluminum foil + copper braid) Overall Shielding (copper braid). Shielding coverage density ≥85%. |
Tensile Member | Central Kevlar core, interstitial Kevlar fill, or Kevlar braid |
Outer Sheath | PUR, PE, TPU |
Working Voltage | 300/300 V – 0.6/1 kV (for higher voltage, please contact ) |
Test Voltage | 2,000 V |
Insulation Resistance | ≥20 MΩ·km at 20°C |
Minimum Bending Radius | Dynamic: 7.5 × OD; Fixed: 4 × OD |
Operating Temperature | -40°C to +105°C |
We offer solutions tailored to specific customer requirements.
Applications
The ROV Tether Cables is designed for demanding subsea and marine applications, including:
↗Marine Seismic Survey Systems
Case Study
For extreme cold environments, customized ROV tether cables are engineered to maintain flexibility, mechanical strength, and reliable performance under low-temperature offshore and polar operating conditions.
→ Low Temperature ROV Tether Cable Solutions


Quality Testing & Control | Manufacturing Process |
Manufacturing Process
RouLine industrial cables are manufactured through controlled processes covering extrusion, reinforcement, assembly, and final inspection. Below are examples of key manufacturing stages that demonstrate our production capabilities and quality control processes.

→Cable Core Assembly Process →Wire Stranding Process →Kevlar braiding process
RouLine ROV cables are manufactured according to project-specific requirements, from conductor and reinforcement selection to cable assembly, forming, testing, and final inspection.
More Videos of ROV Cable Manufacturing →
Test Equipment
Industrial cables manufactured by RouLine are inspected using dedicated equipment for electrical, mechanical, and environmental testing. Depending on the cable design, testing may include high-voltage testing, insulation and continuity checks, tensile testing, flexing, temperature-humidity, salt-spray, and dimensional inspection. Testing procedures can be defined according to cable construction, operating depth, voltage rating, mechanical requirements, and applicable standards. →View the Test Equipment in Use

Ordering Information
Customization: Fully supported
MOQ: project-based negotiation
Standard Lead Time: 5-10 weeks after order confirmation








