Shadow-Caster LED Lighting Underwater Lights

Shadow-Caster LED Underwater Lights: Engineered for the Marine Environment

When it comes to illuminating the water beneath your hull, few names carry the authority of Shadow-Caster LED Lighting. The brand was born precisely because its founders — veterans of rugged military hardware and high-performance optical systems — couldn't find an underwater light on the market that met their standards. The result was a product line built from the ground up to address the real problems boaters face: poor materials, oversized mounting requirements, dependence on external drive electronics, and underwhelming output.

The SCM Series: Low-Profile Surface-Mount Performance

The SCM lineup is Shadow-Caster's flagship family of surface-mount underwater lights and spans a range of sizes to suit vessels of all types. The compact SCM-4 delivers 17 watts of LED output across five single-color options, while the SCM-6 steps up to 24 watts in the same low-profile stainless steel housing. For boaters who want dynamic effects, the SCM-10-EXT-CC packs 42 watts and lets you switch between 12 standard colors — or, when paired with a Shadow-NET®-enabled controller, unlock unlimited color combinations. Every SCM unit features a proprietary clear-gel-filled design injected through the entire unit, which eliminates condensation and water intrusion even under stress — a key differentiator from commodity underwater lights.

The SCR Series: High-Output Round Thru-Hull Lights

For larger vessels or applications demanding maximum brilliance, the SCR-24 delivers 90 watts of intense LED output through 24 high-intensity LEDs housed in a compact 4-inch diameter bronze enclosure designed for under-waterline thru-hull mounting. The SCR-24 features a scratch-resistant borosilicate lens, surge and reverse polarity protection, and thermal throttling to protect components when the light is temporarily above water. Shadow-NET® integration is built in on the 24-LED models, enabling full network control.

Shadow-NET®: The Intelligence Behind the Light

What truly sets Shadow-Caster underwater lights apart from the competition is Shadow-NET® technology — a proprietary lighting control network that integrates directly with the most popular marine electronics platforms on the water. Shadow-Caster was instrumental in creating the NMEA 2000 marine lighting control standard, working alongside Garmin, Raymarine, Furuno, Humminbird, Simrad, Lowrance, and B&G. This means compatible underwater lights can be controlled directly from your MFD — no separate remote, no toggle switching, no compromise.

Built to Last Below the Waterline

Shadow-Caster underwater lights are engineered to withstand shock, vibration, temperature fluctuations, and continuous saltwater exposure. Housings are precision-machined in-house from marine-grade materials including 316 stainless steel and bronze, and all products carry a 3-year warranty as standard. Every unit is low-profile by design, making installation practical on fishing boats, pontoon boats, center consoles, and large yachts alike. Whether you're after a subtle single-color blue glow or a full dynamic color-changing display synced to your onboard electronics, Shadow-Caster's underwater light lineup delivers the visibility, reliability, and integration that serious boaters demand.