Transmit power and data up to 300ft (90m) underwater using a single Cat6 PoE++ cable — ideal for ROVs, live streaming, and inspection systems.
Used in ROV systems, underwater live streaming, marine research, and industrial inspection applications.
300ft Underwater Ethernet Cable Cat6 (PoE++) – DNC-1044
The DNC-1044 is a 300ft (90m) underwater-to-surface Cat6 Ethernet cable designed for reliable long-distance data transmission and power delivery in demanding underwater environments. It supports PoE, PoE+, and PoE++, allowing both data and power to travel through a single cable.
Typical System Setup
Surface laptop / PoE switch → DNC-1044 Ethernet cable → underwater bulkhead connector → underwater camera or subsea device
I
: underwater Ethernet system with surface laptop, PoE switch, 300ft Cat6 cable, bulkhead connector, and subsea camera.
Example of a complete underwater Ethernet system using DNC-1044 cable.
Key Features
- 300ft (90m) length for long-distance underwater applications
- Cat6 Ethernet standard with data speeds up to 1 Gbps
- Supports PoE / PoE+ / PoE++ (IEEE 802.3af / at / bt)
- Simultaneous power and data transmission over one cable
- Waterproof construction for underwater use
- Designed for professional, industrial, and marine environments
Applications
- Underwater live streaming systems
- ROV and subsea robotics
- Marine research and monitoring
- Industrial underwater inspections
- Security and surveillance systems
Who Is This Cable For?
- ROV and subsea robotics operators
- Underwater live streaming teams
- Inspection and engineering companies
- Marine researchers
- Professional underwater camera integrators
Why Use PoE Underwater?
Power over Ethernet allows both power and data transmission through a single cable, simplifying installation and reducing the need for separate power lines in underwater environments.
Why Professionals Choose This Cable
- Reduces system complexity by combining data and power in one cable
- Supports reliable long-distance operation up to 300ft (90m)
- Proven for professional underwater systems and subsea integration
Available Length Options
This cable is available in multiple lengths to fit different underwater applications:
- 300ft (90m) – standard long-distance deployment
- 330ft (100m) – extended reach applications
Looking for a Shorter Cable?
If you need a shorter solution, check our 100ft underwater Ethernet cable for more compact setups, DNC-1020
Integration with Dive And See Systems
The DNC-1044 is compatible with Dive And See underwater Ethernet bulkhead connectors and camera systems, helping create complete plug-and-play underwater communication solutions.
Recommended Components
- Underwater Ethernet bulkhead connectors
- Underwater camera systems
- Surface PoE switches
- Underwater housings with Ethernet bulkhead ports
Technical Highlights
- Ethernet Category: Cat6
- Data Speed: up to 1 Gbps
- PoE Support: IEEE 802.3af / at / bt
- Length: 300ft (90m)
- Designed for underwater operation
Frequently Asked Questions (FAQ)
Can this cable provide power and data at the same time?
Yes. The DNC-1044 supports PoE, PoE+, and PoE++ standards, allowing simultaneous transmission of power and data over a single cable.
What is the maximum data speed?
This cable supports up to 1 Gbps data transmission based on the Cat6 Ethernet standard.
Is this cable suitable for long-distance underwater applications?
Yes. The 300ft (90m) length is designed specifically for long-distance underwater installations such as ROVs, inspections, and live streaming systems.
Can I use this cable with my underwater housing?
The cable is compatible with Dive And See underwater bulkhead connectors and can be integrated into many professional underwater housings and subsea systems.
Do you offer custom lengths or connectors?
Yes. Custom lengths, connector types, and configurations are available upon request.
Important Tightening Warning
Before submerging, verify that all connectors are fully tightened by hand. Do not use tools. Improper sealing may result in water ingress and equipment damage.
Need a Custom Length or Connector?
Custom cable lengths, connector types, and configurations are available upon request. Contact Dive And See for tailored underwater Ethernet solutions.
Compatibility:
- The DNC-1044 is fully compatible with Dive And See bulkhead connectors, including models DNC-2132, DNC-2025, DNC-2031, DNC-2071, DNC-2084, DNC-2082. (Bulkhead connectors sold separately.


