Neutral Buoyancy ROV Cable
Neutral Buoyancy ROV Cable
Custom Subsea Cable for Deep Sea Operations
Neutral buoyancy ROV cables are engineered for subsea environments where stability, control, and reliability are critical.
Unlike conventional underwater cables that tend to sink or float, neutral buoyancy designs achieve a balanced density in seawater, allowing the cable to remain suspended with minimal impact from gravity or uplift forces. This significantly improves ROV maneuverability, reduces mechanical stress on the tether system, and ensures more efficient operation in deep sea exploration, inspection, and mining applications.
Each cable is custom-designed based on operating depth, load conditions, and system architecture to ensure optimal performance in demanding underwater environments.
Key Features
· Neutral buoyancy design for stable underwater suspension
· Reduced tether drag and ROV system load
· Optimized for deep sea dynamic environments
· Custom buoyancy tuning based on operating depth
· Suitable for reeling and dynamic deployment systems
· Integrated power, signal, and fiber optic options
· High fatigue resistance for long-term subsea use
Specifications
Construction
Conductor: Fine-stranded, extra-flexible tinned soft copper wire, Compliant with IEC60228（VDE 0295）Class 6.
Insulation: TPE, TPE, TPV, XLPE, DPEM
Core Structure: anti-twist layering, grouped gap filling, twisted pairs, and layered binding.
Shielding: A combination of tinned copper braid provides EMI/RFI shielding.
Tensile Strength Member: Central Kevlar Core, Interstitial Kevlar Fill, Kevlar Braid
Sheath: Abrasion-resistant Polyurethane (PU), XLPE
Electronic Data
Working Voltage: 300/300V~0.6/1KV
Test Voltage: 2000 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
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 |
We offer solutions tailored to specific customer requirements. Contact Us for Details.
Applications
Ensures stable cable suspension and reduced drag during continuous seabed operations.
Offshore Oil & Gas Inspection
Supports reliable power and signal transmission in long-duration subsea inspection missions.
Marine Research & Survey Systems
Provides stable performance for scientific ROVs requiring precise maneuverability.
Underwater Robotics Platforms
Ideal for advanced ROV systems operating in dynamic underwater environments.
Ordering Information
MOQ: project-based negotiation
Standard Lead Time: 5-10 weeks after order confirmation
Customization: Fully supported
In deep sea ROV operations, cable stability directly impacts control accuracy and system safety. When a cable sinks or floats, it increases tether drag and mechanical stress, reducing overall operational efficiency. Each cable is not a standard product, but an engineered solution based on real operating conditions. We design each system according to:
· Operating depth
· ROV system load
· Electrical / fiber configuration
· Deployment method
· Environmental conditions
Our engineering team evaluates these parameters to define the optimal cable structure and buoyancy balance.
