DNC-GP30 Heavy-Duty Underwater SDI Live View System for GoPro Hero 13/12/11/10/9
The DNC-GP30 is a professional underwater GoPro SDI live view system with two permanently attached heavy-duty cables: one SDI cable and one power cable.
- Live 1080p60 SDI video to the surface
- Two permanently attached heavy-duty cables
- Available cable lengths up to 100 meters
- Continuous 15–24V DC surface power
- GoPro internal recording up to 5K60 depending on model and settings
- Housing depth rating: 100m / 330ft
DNC-GP30 Underwater SDI Live View System
The DNC-GP30 is a professional underwater SDI live view system for GoPro Hero 13, 12, 11, 10, and 9 cameras. It provides real-time 1080p60 SDI video output to the surface while the GoPro can continue recording high-resolution video internally.
The main difference between the DNC-GP30 and the modular DNC-GP28 is the cable configuration. The DNC-GP30 uses two permanently attached heavy-duty cables: a dedicated SDI video cable and a dedicated power cable. Both cables can be supplied in shorter custom lengths or in lengths up to 100 meters / 328 feet.
This design is intended for professional users who prefer a robust system with permanently attached cables for regular underwater inspection, live monitoring, research, aquaculture, documentary production, commercial diving, and other demanding field applications.
The GoPro housing is machined from marine-grade aluminum with a hard-anodized finish and is depth-rated to 100m / 330ft. The system requires 15–24V DC surface power for stable operation, especially when long power cables are used.
How the DNC-GP30 Underwater SDI System Works
The GoPro camera is installed inside the DNC-GP30 underwater housing. Live 1080p60 video travels through the permanently attached SDI cable to the surface, while the separate permanently attached power cable supplies continuous power from the surface.
An SDI monitor, recorder, switcher, streaming encoder, or control station can be connected directly to the SDI output. An HDMI monitor may also be used by connecting an optional SDI-to-HDMI converter at the surface.
For illustration purposes only. The SDI-to-HDMI converter and surface monitor are not included unless specifically listed in the selected configuration.
Powering the DNC-GP30 from Your Boat's Existing 12V Electrical System
The standard DNC-GP30 system includes a 15V universal power supply with 110–240V AC input. This is the standard solution for shore-based operation, workshops, laboratories, and other locations where AC power is readily available.
Many commercial dive boats, work vessels, research vessels, and inspection platforms already have a reliable 12V DC onboard electrical system. In these situations, the DNC-GP30 can operate without using the included 15V AC power supply.
Instead, Dive And See can provide an optional 12V to 24V DC step-up converter that connects directly to the vessel's existing 12V battery or DC electrical system. The converter produces a stable 24V DC output, which is fully compatible with the DNC-GP30 operating range of 15–24V DC.
The higher 24V supply voltage also helps compensate for voltage drop across long heavy-duty power cables, supporting stable operation with cable lengths up to 100 meters / 328 feet.
For illustration purposes only. The converter model and connection hardware may vary.
Typical Installation
Option 1 — Recommended for Boats
12V boat battery or onboard 12V DC system → 12V to 24V DC converter → DNC-GP30 power cable
Option 2 — Included Standard Power Supply
110–240V AC → included 15V power supply → DNC-GP30 power cable
✔ Ideal for commercial dive boats with existing 12V onboard electrical systems.
✔ No 110–240V AC power is required when using the optional 12V to 24V DC converter.
If your vessel only provides 12V DC power, simply let us know when placing your order. We can include the appropriate 12V to 24V DC converter with your DNC-GP30 system, allowing it to operate directly from your boat's existing low-voltage electrical system without requiring the supplied 15V AC power adapter.
Why SDI Instead of HDMI?
SDI is a professional video standard designed for reliable real-time video transmission over longer cable runs. For underwater live view systems, SDI is often simpler and more robust than HDMI because the signal is easier to route through long underwater cable assemblies and professional monitoring equipment.
The DNC-GP30 sends a clean 1080p60 SDI live video signal to the surface while the GoPro can continue recording high-resolution footage internally. This gives the operator real-time monitoring without giving up high-quality recording inside the camera.
Key Features
- Underwater SDI live view system for GoPro Hero 13/12/11/10/9
- 1080p60 SDI output for real-time surface monitoring
- Two permanently attached heavy-duty cables: one SDI cable and one power cable
- Custom cable lengths available up to 100m / 328ft
- 15–24V DC surface power for stable long-distance operation
- Optional 12V to 24V DC converter for operation from a boat battery or onboard 12V electrical system
- GoPro can record internally up to 5K60, 4K120, or 2.7K240 depending on camera model and settings
- Marine-grade aluminum housing with hard-anodized finish
- Depth rating: 100m / 330ft
- Direct compatibility with SDI monitors, recorders, switchers, and streaming equipment
- HDMI monitors can be used with an optional SDI-to-HDMI converter
Why Choose Permanently Attached Cables?
The DNC-GP30 is designed for customers who prefer a simple and robust cable arrangement. The SDI cable and the power cable are permanently attached to the housing, which eliminates the need to connect detachable external cables before each deployment.
- No detachable underwater cable junctions
- Heavy-duty SDI and power cables
- Faster deployment with fewer separate components
- Available in custom lengths for different projects
- Maximum available cable length: 100 meters
Typical System Setup
GoPro Hero camera inside DNC-GP30 underwater housing → permanently attached SDI cable → SDI monitor, recorder, switcher, streaming encoder, or optional SDI-to-HDMI converter → HDMI monitor
Standard power setup: 110–240V AC → included 15V power supply → permanently attached power cable → continuous power to the camera system
12V boat power setup: onboard 12V DC system → optional 12V to 24V DC converter → permanently attached power cable → continuous power to the camera system
Ideal Applications
- Commercial diving: provide a live surface view during underwater work and inspections
- Marine and boat inspections: inspect hulls, propellers, docks, tanks, and underwater infrastructure
- Underwater live streaming: send a stable SDI feed to a surface streaming or production system
- Broadcast and production: combine GoPro image capture with professional SDI monitoring
- Research and observation: monitor underwater behavior, aquaculture systems, and marine life
- Aquaculture monitoring: observe tanks, cages, fish behavior, feeding, and underwater equipment
- Security and surveillance: integrate into monitoring systems for ports, vessels, and underwater assets
- Documentary work: record high-resolution GoPro footage while monitoring the camera live from the surface
Set Includes
- Underwater housing for GoPro Hero 13/12/11/10/9
- Permanently attached SDI cable, selected length up to 100m
- Permanently attached power cable, selected length up to 100m
- 1 inch ball mount with 1/4-20 thread
- 15V universal power supply, 110–240V AC input
Technical Specifications
| Model | DNC-GP30 |
| Compatible Cameras | GoPro Hero 13, 12, 11, 10, 9 |
| Live Video Output | 1080p60 SDI |
| Internal GoPro Recording | Up to 5K60, 4K120, or 2.7K240 depending on GoPro model and settings |
| Cable Configuration | Two permanently attached heavy-duty cables: separate SDI and power cables |
| Available Cable Length | Custom lengths up to 100m / 328ft |
| Required Power Input | 15–24V DC from the surface |
| Included Power Supply | 15V universal power supply, 110–240V AC input |
| Optional Boat Power Converter | 12V to 24V DC step-up converter for operation from an onboard 12V DC electrical system |
| Housing Depth Rating | 100m / 330ft |
| Housing Material | Marine-grade aluminum, hard anodized |
| Surface Monitoring | Direct SDI monitoring or HDMI monitoring with an optional SDI-to-HDMI converter |
Professional SDI Surface Monitoring
The DNC-GP30 is designed for operators who need to see what the GoPro sees while the camera is underwater. The SDI output can be connected to professional monitors, recorders, switchers, converters, or streaming encoders at the surface.
For customers who already own an HDMI monitor, an optional SDI-to-HDMI converter can be installed at the surface between the DNC-GP30 SDI output and the HDMI monitor.
Compatible GoPro Media Mod
The system is designed around the GoPro Hero 13/12/11/10/9 live output workflow and compatible GoPro media accessories required for HDMI-to-SDI integration inside the housing.
Optional Lens and Filter Accessories
Lens and filter accessories can help adapt the GoPro for different underwater shooting conditions, including close-up work and light control.
ND and CPL Filters for GoPro Hero 13/12/11/10/9
ND8, ND16, ND32, and CPL filter options can be used for better exposure control and image management in bright underwater or surface lighting conditions.
Housing Mounting Points
The underwater housing includes mounting points for integration with ball mounts, brackets, inspection rigs, or custom underwater camera frames.
Outline Dimensions of the GoPro Housing
Measuring units: inch.
Frequently Asked Questions
Why use SDI instead of HDMI underwater?
SDI is commonly used in professional video systems because it is reliable for longer cable runs and works well with broadcast monitors, recorders, switchers, and converters. For this type of underwater live view system, SDI is often simpler and more dependable than trying to extend HDMI over a long underwater cable.
Can I use an HDMI monitor?
Yes. Connect an optional SDI-to-HDMI converter at the surface between the DNC-GP30 SDI output and the HDMI monitor.
Can the GoPro still record internally?
Yes. The system provides SDI live view to the surface while the GoPro can record high-resolution footage internally to its memory card.
Are the SDI and power cables detachable?
No. The DNC-GP30 uses two permanently attached heavy-duty cables: one SDI cable and one power cable.
What cable lengths are available?
Shorter custom cable lengths are available. The maximum available length is up to 100 meters / 328 feet.
Does this system power the GoPro from the surface?
Yes. The system uses a separate permanently attached power cable and requires 15–24V DC surface power. A 15V universal power supply is included with the standard set.
Why does the DNC-GP30 use 15–24V DC power?
The higher input voltage helps support stable operation through long power cables, especially in configurations approaching 100 meters.
Can I power the DNC-GP30 from my boat's 12V battery?
Yes. Dive And See can supply an optional 12V to 24V DC step-up converter. It connects to the vessel's existing 12V DC system and provides a stable 24V DC output for the DNC-GP30. When this option is used, the included 15V AC power supply is not required.
Is 24V DC compatible with the DNC-GP30?
Yes. The DNC-GP30 operates from 15–24V DC. A 24V DC input is within the approved operating range and helps support stable operation through long power cables.
What is the depth rating?
The housing is rated to 100m / 330ft.
What is this system best for?
It is designed for underwater live view, commercial diving, inspection, marine research, live streaming, broadcast, aquaculture monitoring, and professional GoPro-based underwater video workflows.
Need a Custom Cable Length?
The DNC-GP30 can be configured with permanently attached SDI and power cables in shorter custom lengths or in lengths up to 100 meters. Contact Dive And See before ordering if your project requires a specific cable length, connector arrangement, monitoring setup, or surface power configuration. If your boat only provides 12V DC power, ask us to include the optional 12V to 24V DC converter.
