Copyright © 2019 Underwater Lights Limited


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For the past 5 years its been all about how bright can you make an underwater light, the new trend though is now color change. 2018 is set to be the year the industry see's color change take off.


29 years ago we made the very first underwater lights for a superyacht in Europe. A quarter of a century later they still work perfectly and is testament to our ability to make the best products in the market with NEVER having had a light fail due to water ingress.

QTS 100


Tel: 954-604-4024 

Click here to visit our SuperYacht website



The QT75 LED underwater light features single color or color change technology utilizing the entire color spectrum, which produces over 16 million color choices to create just the right mood. The smallest weld-in design on the market (up to 50° angling). Never feel trapped by this weld-in fixture, the exchangeable projector allows servicing and upgrades without the hassle of hauling your boat. With it’s 90° degree beam angle the QT75 LED is recommended for Steel and Aluminum hull boats 90+ feet LOA, installing each fixture 3 - 9 feet apart for the best illumination.


With complete Lloyd’s Register Approval, GL and ABS Design Appraisal on all components, the QT75 has been installed on some of the largest and most prestigious Superyachts in the world. The QT75 is a completely customizable underwater lighting solution for larger yachts. We offer a bespoke design service tailored for each individual hull.

Flush Plus Weld In section

50 deg Weld In section

Download Spec Sheet

QT75 and 167 Installation on M/Y Anodyne


25 years ago we made the very first underwater light for a ground breaking Superyacht in Europe. A quarter of a century later those same lights are still working perfectly and is testament to our ability in making the best products in the market. We've NEVER had a light fail due to water ingress. We have kept our overheads low and our team small in order to stay efficient and competitive and that's why we are amongst the small number of trusted companies in the industry.


All of our products are designed and made in house. We use local specialized sub contractors when needed and have and never will 'farm' our production or design out to companies in China or Asia. We believe in first principles and are not willing to cut corners in order to save a dollars. 


All of our products are made from the very highest grade Aluminum, Bronze and 316L Stainless steel. Not only is this essential for strength and longevity but aids heat dissipation and structural strength. Although plastic housings offer a vastly reduced cost benefit, this saving is not in the customers best interest and therefore not in ours.