Neutral Buoyant CAT6 Control Cable Underwater ROV Umbilical Tether for ROV Vehicles

Specification

Basic Structure	Conductor+Insulation+Jacket+Hose
Conductor	Plain Copper/ Tinned Copper
Insulation	PE
Braid	Kevlar/ Plain Copper/ Tinned Copper
Jacket	PUR/TPE/PCP

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INTRODUCTION

Our neutral buoyancy CAT6 ROV tether cable is a professional lightweight subsea communication and control cable designed specifically for micro ROVs, inspection ROVs, and underwater robotic vehicles. Unlike traditional heavy underwater cables that cause drag, sinking, and vehicle attitude deviation, this CAT6 underwater tether adopts a precision zero-buoyancy filling structure, achieving neutral buoyancy in full seawater environment. It supports stable CAT6 gigabit data transmission, real-time equipment control, video signal feedback, and underwater system remote operation. The ultra-flexible, low-torque design greatly reduces underwater resistance, allowing ROV vehicles to move freely, hover steadily, and operate efficiently in complex shallow and deep water conditions.

Neutral Buoyant CAT6 Control Cable Underwater ROV Umbilical Tether for ROV Vehicles

4.1 True Neutral Buoyancy Subsea Design

Engineered with exclusive low-density marine filling compound and symmetrical inner structure, the entire ROV tether cable maintains neutral buoyancy in standard seawater. It does not sink or float upward, eliminating cable dragging force on the ROV vehicle. This feature stabilizes underwater hovering, improves operation accuracy, and reduces the load of ROV power systems — a core advantage for lightweight inspection underwater robots.

4.2 Standard CAT6 High-Speed Data Transmission

Built with pure copper CAT6 twisted pair cores with high-density shielding structure, the underwater tether supports stable gigabit Ethernet transmission. It effectively resists seawater electromagnetic interference, ensuring lossless transmission of underwater video, sensor data, remote control signals, and real-time system feedback. It fully meets long-distance continuous data communication requirements for marine inspection, underwater monitoring, and offshore engineering ROV operations.

4.3 Ultra-Flexible & Low-Drag Tether Structure

The outer jacket adopts high-performance flexible PUR marine grade material, featuring ultra-low friction, torsion resistance, and bending resistance. Compared with ordinary underwater cables, this ROV tether has smaller bending radius, no twisting knotting during underwater movement, and adapts to frequent floating, diving and turning actions of small and medium-sized ROV vehicles.

4.4 Marine Waterproof & Anti-Aging Performance

Integrated seamless extrusion molding process prevents seawater penetration. The cable is resistant to seawater corrosion, ultraviolet aging, and underwater microbial erosion. It supports long-term continuous underwater operation and adapts to harsh marine, reservoir, and river underwater working environments.

Neutral Buoyant CAT6 Control Cable Underwater ROV Umbilical Tether for ROV Vehicles

5.Professional Application Scenarios

Micro inspection ROV underwater detection and survey

Underwater robot real-time control and data transmission

Marine scientific research underwater monitoring equipment

Reservoir, dam, bridge underwater safety inspection

Shallow sea offshore platform auxiliary detection ROV

Underwater camera and underwater monitoring system connection

6. Product Technical Specifications

Item	Specification
Product Name	Neutral Buoyancy CAT6 ROV Tether Cable
Transmission Standard	CAT6 Gigabit Ethernet
Buoyancy Performance	Zero / Neutral buoyancy in seawater
Outer Jacket Material	Marine grade PUR / TPU
Flexibility	Ultra-flexible, low torsion, anti-kink
Working Depth	Custom shallow water / deep water grade
Working Temperature	-20℃ ~ +60℃
Customization	Cable length, outer diameter, shielding grade optional

7.FAQ

Q1: What is a neutral buoyancy ROV tether cable?

Neutral buoyancy ROV tether is a special underwater control and data cable that keeps balanced weight in seawater without sinking or floating. It reduces external force interference on ROV vehicles and improves underwater operation stability.

Q2: Why use CAT6 for ROV underwater tether?

CAT6 Ethernet structure supports gigabit high-speed data transmission, which can stably transmit high-definition underwater video, sensor data and remote control signals, meeting the high real-time requirements of modern inspection ROVs.

Q3: Can you customize the length and diameter of the ROV tether?

Yes. We provide full customization of cable length, outer diameter, shielding structure and buoyancy grade to match different sizes and working depths of ROV underwater vehicles.

Q4: Is this tether flexible enough for small ROV?

This CAT6 ROV tether adopts ultra-flexible low-torque marine material, which is anti-kink and highly bendable, perfectly suitable for micro and small underwater ROV inspection robots.

8.CTA Ending

If you are looking for high-stability neutral buoyancy CAT6 ROV tether cables for your underwater robotic vehicles, please contact us for customized parameters and factory wholesale price. We provide professional marine cable solutions for global underwater engineering and ROV equipment manufacturers.

About Us

ADVANTAGES

As a professional manufacturer of marine underwater cables, our neutral buoyancy CAT6 ROV tether cable is specially optimized for underwater robot working characteristics. The zero-buoyancy design solves the industry pain point of traditional tethers affecting ROV balance and maneuverability. Stable CAT6 gigabit transmission ensures no frame loss or delay in underwater video and control signals. All cables are 100% factory tested for waterproof performance, flexibility and data stability, providing reliable long-term support for underwater robot engineering projects worldwide.

CUSTOMIZATION CAPABILITY

We are your reliable partner in special cable customization

Considering different working conditions and clients' request, Derul's cable product can be highly customized.

To best meet the demands in our clients' practical application, we can offer highly customized solution and quality cable product, to ensure the cable is suitable for our clients.

We welcome new clients to send us specific requirement. Our teams will evaluate it and offer unique technical datasheet and technical drawings to you.

Our competitive price which most clients could afford will be another key to our successful and efficient cooperation.

As the original manufacturer, we provide quick response to any of our clients' inquiry. We have close interconnection between the workshop, engineer and sales person.

FAQ

Q: Is Derul Cable the original manufacturer?

A: Derul Cable is a special cable manufacturer. Our factory is based in Shanghai.

Q: Is the price negotiable?

A: Yes, the price is negotiable. Our price is also flexible due to several factors including purchase quantity.

Q: What is the regular MOQ for your cable?

A: Any quantity is okay to purchase for product at stock. For product with no stock, its MOQ is usually 100-200 meters per type.

Q: How can I get sample?

A: Usually you only need to pay the express freight, and after your confirmation of the product dimension and structure, we can arrange the sample and send it directly to you.

Q: Is OEM or ODM service available?

A: OEM and ODM services are both available. You can provide us with your requirement for the product and we will evaluate it to push forward.

Q: What is the regular production time?

A: For regular quantity, it usually costs about 15-25 days to produce.

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