Sealite Supplies Perimeter Marking Buoys for Threatened Waterbirds

Sealite Case Studies

Sealite Supplies Perimeter Marking Buoys for Threatened Waterbirds

Sealite Supplies Perimeter Marking Buoys for Threatened Waterbirds

By:Sealite | July 12, 2017
Application: Perimeter marking of loon nurseries and nests to aid in the reduction of threatened young loon populations
Products: SL-B576 10-inch Regulatory Buoys with Custom Signage
Location: Lake Winnipesaukee, New Hampshire, USA


The Common Loon is a threatened waterbird species and is the focus of intensive management in New Hampshire. Human impact remains the main reason for such high mortality, especially among the chicks. The largest single source of human-caused chick mortality is from collisions with fast-moving boats and personal watercraft. Other causes of loon bird mortality include abandonment of nests when loons are approached too closely, and nest flooding or swamping when powerboat wakes either wash the eggs out of nests or chill the eggs, making them inviable.


The Loon Preservation Committee needed buoy products that were lightweight, easy to handle and readily available to the small, one or two people teams who would be installing them. Used to mark no-wake boundaries and cautionary perimeters, the teams deploy the buoys to limit human interference with nesting loons and chick nursery sites.


The highly visible SL-B576 10-inch Sealite Buoys with custom signage provide visual cautionary marking to passing boaters and personal watercraft riders. The custom signage wraps are affixed seasonally to the buoys to protect nesting pairs, eggs, and chicks and can be removed once the danger to the next loon generation has passed.

By providing a marked cautionary zone, the nesting areas are minimally impacted, ensuring a better success rate for this most vulnerable stage of the loon’s life cycle.

Installing cautionary boundaries with relevant marks is important for the future of New Hampshire’s Common Loon. It is one way the Loon Preservation Committee (LPC) has helped the rebound of loon populations throughout local lakes for over 40 years.

It is one of the reasons why LPC is an internationally recognized leader in the techniques used to successfully manage Loon populations.

The Future

Through the Loon Preservation Committee’s habitat management efforts, which include establishing buffer zones with signs and ropelines around vulnerable nest sites and nursery areas, the threatened loon population declines have been reversed in New Hampshire lakes. Last year, over half of loon chicks hatched in New Hampshire came from nest sites that were protected with floating signs and/or ropelines.


The Sealite buoys are perfect for use on big, busy lakes, stated Caroline Hughes, Field Program Coordinator for The Loon Preservation Committee. They are much easier to handle and much less likely to flip over than any other buoy we’ve ever used. The reflective exterior wrap and custom signage make the buoys highly visible in all weather conditions to passing boaters, making them ideal for our specific needs.

– Caroline Hughes, The Loon Preservation Committee

What Our Client's Say

On behalf of Karachi Port I am pleased to acknowledge your good service and provision of the new SL-75 solar marine lanterns installed by your firm in the harbour channel at Karachi Port. The new lanterns are very feasible and useful and equipped with the latest navigational technology.

-Captain Muhammad Altaf

[Re: Sealite SL-LED Lightsource at LaCorbiere Lighthouse], We were impressed with Sealite’s solution which provided a modern, reliable and efficient light source whilst remaining sympathetic to the lighthouse’s heritage and significance as a local landmark, but most importantly to improve upon reliability and to continue its vital role in aiding the safety of navigation in Jersey’s waters, as it has done for nearly 130 years.

-Aaron Gavey

[Re: Sealite Wins Duke’s Choice Award for Java Technology & the Environment – Sealite GSM monitoring & control system]. The team at Motorola were extremely impressed with Sealite’s innovative integration of the G24-Java wireless module in their GSM Monitoring & Alarm System.

-Golan Haver

As one of your new distributors (Belize and Honduras, Waller Marine Belize LTD), I would like to express my congratulations to you and your people in providing reliable, dependable and inexpensive products. Formerly we were distributors for a Canadian made product but these were found to be too expensive for the market and also offered only difficult and complicated programming. Our first order of lights from you (SL15’s) took only four days to arrive from Aussie Land, when I opened the box they were still flashing. I tested a SL60 (white) for four days (steady on) before it required a recharge…remarkable. I will be placing another order shortly. Keep up the good work.

-Capt Andy Suddes

[Re: Installation of WindTalker for kite-surfing club], The WindTalker™ is a big success here in Cyprus, thanks to your after sales support the unit is now functioning perfectly.

-Christophe Meletiou

We choose to sell Sealite … this is a long story, well we treat Sealite as our own and the relationship we have developed with Jeff and Chris and their attitude and commitment towards growing Sealite to this stage is remarkable. We feel at home when talking to them and the staff of Sealite and this in turn gives us more security and strength in selling products in India.

-Aliasgar E Patrawala

[Re: Sealite Solar-Powered LED Area Lighting system], We chose the Sealite system for the Jacobs Well Queuing Pontoon due to our previous experience with Sealite’s product, its durability and construction.

-Peter Taylor

I just wanted to say thank you for the light and bracket Sealite supplied to Birkenhead Marina. As the other lights (old ones) need new batteries I will be replacing them with new lights from Sealite and the same brackets that you supplied with the light we received last week … Your product is excellent and the system of setting the light is good also. Thanks again for all your trouble.

-Philip McGowen