From the DNC Archives — 2015. This article revisits an earlier generation of Dive And See underwater connectors. Product availability, specifications and compatibility may have changed; refer to current product listings before selecting equipment.

Getting video, data and control signals through an underwater camera housing requires more than an ordinary connector. A reliable system needs a properly matched bulkhead interface, a suitable external cable and careful sealing at the housing wall. Dive And See (DNC) has developed underwater connectivity solutions for camera housings, marine inspection and research applications.

Why underwater bulkhead connectors matter

A bulkhead connector provides an electrical or signal connection through the wall of a sealed enclosure. The connection must be designed for the housing's mounting geometry, pressure environment and cable requirements. Connector choice also affects serviceability: a detachable external cable can be easier to replace or transport than a permanently attached assembly.

Underwater Ethernet connectors and cables

Ethernet is useful when an underwater system needs network communication, remote monitoring or IP camera connectivity. A typical design combines an Ethernet-capable bulkhead connection with a properly terminated external cable. Depending on the equipment, power may be delivered separately or through a compatible Power over Ethernet (PoE) arrangement.

Archive photo (2015): an early DNC underwater Ethernet RJ45 connector design.

Before ordering, confirm the housing thread and wall thickness, Ethernet pinout, cable length, required data rate, power needs and operating depth. A standard RJ45 plug by itself is not a waterproof external connection.

Underwater USB bulkhead connectors

USB bulkhead connections can support camera control, data communication or power, depending on the connected devices and the specific assembly. The connector shape alone does not establish supported USB speed, power delivery or maximum cable length.

Archive photo (2015): DNC underwater USB Type-A connector.

Archive photo (2015): DNC underwater USB Micro-B connector.

For a modern design, verify the exact USB interface, the camera's requirements and the intended cable length. Long-distance USB applications may require a purpose-built extension system rather than a passive cable.

Applications for underwater connectivity

• Underwater camera housings: route signals and power through a sealed enclosure.
• Marine and hull inspection: connect cameras to surface monitoring or recording equipment.
• Research and observation: build serviceable connections for instrument and camera deployments.
• ROV and remote systems: support networked devices and control interfaces where compatible.

How to choose a bulkhead connector

1. Identify the housing's thread size, mounting space and sealing surface.
2. Confirm the required signal standard: Ethernet, USB, SDI or another interface.
3. Specify cable length, external termination and any power requirements.
4. Check the complete assembly's depth rating and installation instructions.
5. Protect the cable from pulling loads; do not suspend equipment by the connector.

Current Dive And See solutions

The photos above document historical designs, not necessarily current stock. For today's configurations, explore Dive And See underwater connectors, Ethernet cables and camera systems, or contact DNC with your housing model, interface, cable length and operating depth for compatibility guidance.

Frequently asked questions

Can I use an ordinary RJ45 connector underwater?

No. A standard exposed RJ45 connection is not designed to provide a pressure-rated underwater seal. Use a suitable waterproof connection and housing pass-through assembly.

Does every underwater Ethernet connector support PoE?

Not necessarily. PoE compatibility depends on the full connector and cable assembly, conductor configuration and the connected equipment. Confirm the requirements before ordering.

Will a USB bulkhead connector work with any camera?

Compatibility depends on connector type, wiring, supported functions and the camera's interface. Check these details for the exact camera and housing.

Historical note: Originally published in 2015; editorial content updated for technical clarity. Original DNC product photographs retained.