Light Up Your Boating Life with Marine-Grade Performance and Unmatched Brightness.
High-Output & Built to Last
Whether you are cruising the harbor, offshore night fishing, or standing out at the sandbar, Shadow-Caster® underwater LED lights deliver intense, brilliant illumination designed specifically for freshwater or harsh saltwater environments. Manufactured in Clearwater, Florida, all Shadow-Caster lights feature marine-grade bronze, hard-anodized aluminum, or thermal-polymer housings, with scratch-resistant Borosilicate glass lenses. Their clear-gel-filled interior eliminates water intrusion, while transient surge, reverse-polarity, and internal thermal throttling technologies ensure reliable, long-lasting performance.
No matter what kind of boat you have or where you use it, there is a Shadow-Caster transom light that fits your needs. From sub-compact 3,000-lumen lights for aluminum or fiberglass trailer-kept vessels and bronze high-output single-color, multi-color, or color-changing fixtures for large vessels and yachts, explore our USA-made underwater lights engineered for seamless helm and MFD integration.
- Gel-filled interior eliminates water intrusion
- Thermal Protection prevents overheating
- Surge Protection protects from transient voltage spikes
- Reverse Polarity Protection protects from power flowing backward
- 3-Year Warranty
- Made in the USA
Shadow-Caster Underwater LED Lights
Color Changing (CC) & RGB Transom Lights
SC3-CC-BZ
- 3,000 Lumens
- 3.4″ (87mm) outside diameter
- Bronze Housing
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Color Changing (Shadow-NET Enabled RGB)
SCR-24-CC
- 10,000 Lumens
- 4″ (102mm X 17mm) outside diameter
- Bronze Housing
- 10 – 40-volt input
- 90-watt power draw
- 7.8 amp current draw @12 volts
- Color Changing (Shadow-NET Enabled RGB)
| Model | SC3-CC-BZ | SCR-24-CC |
| Lumen Output | 3,000 | 10,000 |
| Housing Material | 3.4″ Round Marine Bronze | 4″ Round Marine Bronze |
| Voltage & Current Draw | Current 2 amps @ 12V, 24 watts | Current draw of 7.8 amps at 12V 90 watts power draw |
| Recommended Vessel / Hull Type | Trailered Vessels / Use SC3SM-BR Gasket for Metal Hulls | Live-in-Water Vessels Use SCR Gasket for Metal Hulls |
| Control Compatibility | Power Toggle or Shadow-NET™ | Power Toggle or Shadow-NET™ |
SC3-CC-AL
- 3,000 Lumens
- 3″ Aluminum Housing
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Color Changing (Shadow-NET Enabled RGB)
SC3-RGB-TB
- 3,000 Lumens
- 3″ Aluminum Housing
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Color Changing (Shadow-NET Enabled RGB)
| Model | SC3-CC-AL | SC3-CC-TB |
| Lumen Output | 3,000 | 3,000 |
| Housing Material | 3.6″ (92mm) Aluminum | 3 inch (77mm) Aluminum |
| Voltage & Current Draw | Current 2 amps @ 12V, 24 watts | Current 2 amps @ 12V, 24 watts |
| Recommended Vessel / Hull Type | Trailered Vessels / Use SC3SM Gasket for Metal Hulls | Pontoon & Aluminum Boats Use SC3TB Gasket for Metal Hulls |
| Control Compatibility | Any Brand RGB Controller | Any Brand RGB Controller |
SC2-CC-BZSM
- 3,000 Lumens
- 3 Inch (77mm) diameter x 0.5″
- Bronze Housing
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Color Changing (Shadow-NET Enabled RGB)
SC2-CC-CSM
- 3,000 Lumens
- 3 Inch (77mm) diameter x 0.5″
- Thermally Conductive Polymer Housing
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Color Changing (Shadow-NET Enabled RGB)
| Model | SC2-CC | SC2-CC-CSM |
| Lumen Output | 3,000 | 3,000 |
| Housing Material | 3 Inch (77mm) Marine Bronze | 3 Inch (77mm) Thermally Conductive Polymer |
| Voltage & Current Draw | Current 2 amps @ 12V, 24 watts | Current 2 amps @ 12V, 24 watts |
| Recommended Vessel / Hull Type | Live-in-Water Vessels Use SCR Gasket for Metal Hulls | Live-in-Water Vessels Use SCR Gasket for Metal Hulls |
| Control Compatibility | Power Toggle or Shadow-NET™ | Power Toggle or Shadow-NET™ |
Single-Color & Multi-Color Underwater Boat Lights
| Model | SCR-16 | SCR-24 |
| Lumen Output | 7000 | 10,000 |
| Housing Material | 4″ Compact Circular Marine Bronze | 4″ Compact Circular Marine Bronze |
| Voltage & Current Draw | Current draw of 5 amps at 12V 60 watts power draw | Current draw of 7.8 amps at 12V 90 watts power draw |
| Recommended Vessel / Hull Type | Live-in-Water Vessels Use SCR Gasket for Metal Hulls | Live-in-Water Vessels Use SCR Gasket for Metal Hulls |
| Control Compatibility | Power Toggle or Shadow-NET™ | Power Toggle or Shadow-NET™ |
SCR-16
- 7,000 Lumens
- 4″ outside diameter (102mm X 17mm)
- Bronze Housing
- 10 – 40-volt input
- 60-watt power draw
- 5-amp current draw @12 volts
- Colors: Bimini Blue, Ultra Blue, Great White, Aqua Green, Cool Red, and Great White
SCR-24
- 10,000 Lumens
- 4″ outside diameter (102mm X 17mm)
- Bronze Housing
- 10 – 40-volt input
- 90-watt power draw
- 7.8 amp current draw @12 volts
- Colors: Bimini Blue, Great White, Aqua Green, and Great White
SC3 Series
| Model | SC3-AL | SC3-BZ | SC3-TB |
| Lumen Output | 3000 | 3000 | 3000 |
| Housing Material | Aluminum Housing | Bronze Housing | Aluminum Housing |
| Voltage & Current Draw | Current 2 amps @ 12V, 24 watts | Current 2 amps @ 12V, 24 watts | Current 2 amps @ 12V, 24 watts |
| Recommended Vessel / Hull Type | Skiffs, bowriders SC3 Gasket for Metal Hulls | Center Consoles & Express Cruisers SC3 Gasket for Metal Hulls | Sportfish, Large Cruisers & Yachts SC3 Gasket for Metal Hulls |
| Control Compatibility | Power Toggle | Power Toggle | Power Toggle |
SC3- Aluminum
- 3,000 Lumens
- 3.6″ (92mm) Aluminum
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Colors: Blue, White, Blue and White
SC3-Bronze
- 3,000 Lumens
- 3.4″ (87mm) Bronze
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Colors: Blue, White, Blue and White
SC3-TB
- 3,000 Lumens
- 3″ Aluminum Housing
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Colors: Blue, White
SC2 Series
Model | SC2-Bronze | SC2-Polymer |
| Lumen Output | 3000 | 3000 |
| Housing Material | Bronze Housing | Thermally Conductive Polymer Housing |
| Voltage & Current Draw | Current 2 amps @ 12V, 24 watts | Current 2 amps @ 12V, 24 watts |
| Recommended Vessel / Hull Type | Center Consoles, Skiffs, Bowriders SC2 Gasket for Metal Hulls | Center Consoles, Skiffs, Boriders |
| Control Compatibility | Power Toggle | Power Toggle |
SC2-Bronze
- 3,000 Lumens
- 3″ Bronze Housing
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Colors: Blue, White, Blue and White
SC2-Polymer
- 3,000 Lumens
- 3″ Polymer Housing
- 10 – 40-volt input
- 24-watt power draw
- 2 amp current draw @12 volts
- Colors: Blue, White
Installation & Buyer’s Guide
Selecting the Right Housing Material for Your Vessel
- Marine Bronze: Essential for vessels kept continuously submerged. Bronze resists biofouling and galvanic corrosion when submerged.
- Hard-Anodized Aluminum (SC3-ALSM & ALTB): Designed specifically for trailer-kept or lift-kept boats. Note: If mounting aluminum-housed lights onto an aluminum hull, always install a dedicated isolation gasket (e.g., SCM-GASKET-SC3SM) to prevent galvanic corrosion.
Transom Drilling & Sealing Best Practices
- Mounting Height: Mount lights as low on the transom as possible for continuous water cooling and maximum beam angle. Avoid mounting on hull running surfaces or running strakes to prevent drag and debris damage.
- Hole Sizing: Pre-drill a single 5/8″ center hole for the power cable. Pre-drill screw holes with a 9/64″ bit for the included #8 stainless steel screws to prevent stripping or snapping screws.
- Marine Sealant: Use marine polyurethane sealant such as 3M 4200. Never use solvent-based cleaners containing acetone on polycarbonate lenses.
Frequently Asked Questions
Can Shadow-Caster underwater lights operate out of the water?
Yes. Shadow-Caster underwater LED lights feature integrated thermal throttling technology. If operated out of the water, internal sensors automatically dim the light to prevent overheating and protect internal electronics without causing damage.
Q: Can I install aluminum underwater lights on a vessel kept in salt water?
No. Aluminum-housed underwater lights like the SC3-ALSM series are recommended specifically for trailer-kept or lift-kept boats. For boats stored continuously in the salt water, you should only use lights with marine bronze housings to withstand persistent saltwater exposure.
How do I control color-changing Shadow-Caster underwater lights?
Shadow-Caster full-color (CC) lights can be controlled via simple power toggle switches, dedicated push-button controllers, or integrated directly into major Multi-Function Displays (Garmin, Simrad, Lowrance, Raymarine, Furuno) via Shadow-NET system controllers like the Light Commander (SCM-LC-N2K).
What is the best underwater light to attract fish?
Brighter will always be better, but color is also important. In shallow, lakes and near shore waters, white, blue, and green lights attract plankton which attracts bait fish which attract game fish. Blue light penetrates farther into deep water making Bimini Blue and Ultra-Blue lights a better choice for attracting deep water fish in deep lakes and offshore waters.