Underwater Boat Lights
The SLL-2100 is a 100W underwater boat light with dual color flood output designed for continuous operation in saltwater, high-pressure washdown, and deep submersion. It delivers 8000 effective lumens in cool white and blue, using CREE LEDs in a die-cast bronze housing with IP69K sealing, making it suitable for fishing boats, yachts, and marine vessels that require reliable illumination below the waterline or on deck during night operations.
- 8000 effective lumens in cool white and blue flood patterns illuminate large underwater areas without hot spots
- IP69K rating ensures full protection against high-pressure water jets, salt spray, and submersion up to 1 meter
- Bronze housing resists corrosion in saltwater environments where steel and aluminum degrade quickly
- 9–32V DC operation allows use on both 12V and 24V boat electrical systems without voltage regulation
- Dual color output (cool white and blue) supports both visibility and attraction of fish or underwater objects
Where This Lamp Is Used
- Underwater lighting on fishing boats for night trolling and net deployment
- Deck and hull edge lighting on yachts and pleasure craft during night navigation
- Submersible lighting on marine research vessels or underwater inspection platforms
- Boat docking and mooring lighting where high-intensity flood coverage is needed
- Marine vessel maintenance areas requiring bright, durable lighting after pressure washing
Who It Is For
- Marine equipment OEMs building lighting into new boat models with a focus on durability
- Fishing boat operators replacing halogen or low-lumen LED lights that fail in saltwater
- Yacht and vessel maintenance teams needing lights that survive daily high-pressure washdowns
- Distributors of marine lighting seeking a dual color option with a single part number
- Fleet operators of service boats requiring consistent lighting across 12V and 24V systems
Problems It Solves
- Halogen underwater lights burn out quickly in saltwater and draw excessive current from boat batteries
- Cheap plastic housings degrade under UV exposure and fail after a few months in marine environments
- Lights with lower IP ratings leak water after pressure washing, leading to short circuits and failure
- Single color lights limit functionality—white for visibility, blue for attraction—but require two separate models
- Narrow beam lights do not cover the full area needed for deck or hull edge illumination
Technical Features
- 100W CREE LEDs with a raw lumen output of 10,000 lm and 8,000 effective lumens
- Dual color flood beam pattern with optional cool white (6000K) and blue output
- Die-cast bronze housing with durable UV-resistant polyester powder coating
- Anti-scratch polycarbonate lens with high impact resistance for underwater use
- Overvoltage and overheat protection built into the internal circuitry
- 9–32V DC input range supports both 12V and 24V boat electrical systems
- IP69K sealing rated for full submersion and high-pressure water jets
- Operating temperature range from -40 to +85 degrees Celsius
- 50,000 hour lifespan under continuous operation
- Standard bare wire lead of 40cm with optional Deutsch connector available
Technical Specification
Values taken from the original factory specification for this model. Fields the factory sheet does not state are left out rather than estimated.
| Part Number | SLL-2100 |
|---|---|
| Power | 100W |
| Raw Lumens | 10,000 lm |
| Effective Lumens | 8,000 lm |
| LED | CREE LEDs |
| Beam Pattern | Flood, dual color optional |
| Colour Temperature | 6000K (cool white) |
| Operating Voltage | 9–32V DC |
| Housing Material | Die-cast bronze, UV-resistant polyester powder coating |
| Lens Material | Anti-scratch polycarbonate |
| Waterproof Rating | IP69K |
| Operating Temperature | -40 to +85 degrees Celsius |
| Electrical Connection | Bare wire 40cm, Deutsch connector available |
| Lifetime | More than 50,000 hours |
| Certification | CE, RoHS |
Materials Used
- Die-cast bronze housing with UV-resistant polyester powder coating
- Anti-scratch polycarbonate lens with high impact resistance
- Internal circuit board with overvoltage and overheat protection
- Silicone rubber gasket and sealed cable entry for IP69K integrity
- Bare copper wire lead with PVC insulation and 40cm length
How This Lamp Is Built
Die casting of the bronze housing and heat sink
Powder coating with UV-resistant polyester finish
LED board assembly with CREE emitters and thermal interface material
Lens bonding and gasket sealing with silicone sealant
Quality Control on This Model
- Photometric output verified in an integrating sphere
- Sealing verified against the IP69K rating using high-pressure water jet and submersion tests
- Vibration testing on a vibration test machine to simulate boat motion
- Salt spray corrosion testing on the bronze housing and coating
- High and low temperature alternating humidity testing across the -40 to +85 degrees Celsius range
Customisation Options
- Deutsch DT connector instead of the standard 40cm bare wire lead
- Single color output (cool white or blue only) instead of dual color
- Alternative cable length to match a specific boat harness
- Private label logo on the housing and printed carton
- Mixed cartons combining this light with other SUNLITEC models for trial orders
How It Compares With the Alternatives
| Plastic-housed underwater light | Bronze housing resists saltwater corrosion and UV degradation, while plastic becomes brittle and cracks over time |
|---|---|
| Single color underwater light | Dual color output supports both visibility and fish attraction without requiring two separate models |
| Lower power 50W underwater light | Higher lumen output covers larger areas, reducing the number of lights needed per vessel |
How to Fit and Use It
- Mount on a flat, clean surface using the provided bracket and ensure the cable entry points downward
- Leave a drip loop in the 40cm lead to prevent water from running into the gland
- Use the cool white setting for visibility and the blue setting to attract fish or highlight underwater structures
- Clean the polycarbonate lens with water and a soft cloth only—avoid solvents that degrade the anti-scratch coating
Questions About This Model
Can I order a sample before placing a bulk order
Yes. Sample orders are welcome and mixed samples of different models in one shipment are accepted.
What is the lead time
Sample orders normally take around 3 to 7 working days. Bulk lead time depends on the model and the quantity ordered.
Do you have a minimum order quantity
There is an MOQ for standard orders, but smaller orders are also accepted, which suits distributors testing a new model.
How is the lamp shipped
Samples usually go by DHL, UPS, FedEx or TNT in around 4 to 7 days. Bulk orders ship by air in about 7 to 15 days or by sea in about 15 to 30 days.
Will this lamp work on both 12V and 24V boats
Yes. The operating range is 9 to 32V DC, so the same part number can be fitted to 12V and 24V boat electrical systems.
Can you supply the lamp with our own brand
Yes. OEM and ODM service is available, including a private label logo on the housing and printed cartons.
Is it approved for marine use
The lamp is CE and RoHS compliant and carries an IP69K rating, making it suitable for marine environments including saltwater and high-pressure washdowns.
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