Green Mountain Marine Services is your local dealer for Great Northern Docks, offering premium-quality aluminum dock systems for all types of waterfronts throughout Vermont and upstate New York. Whether you’re upgrading your residential dock or designing a commercial setup, we provide professional sales, delivery, and installation of Great Northern’s industry-leading products.
Explore our dock system options below and use the form alongside to request a personalized quote.
Need help choosing the right dock for your shoreline? We’re happy to guide you based on water depth, shoreline conditions, and usage.

These heavy-duty aluminum docks are ideal for medium to large lakes with relatively stable water levels. The 6″ marine-grade aluminum tubular frame offers exceptional strength and rigidity. Choose from a range of decking styles, including cedar, plastic, or aluminum planks. A favorite for residential and light commercial applications.
Perfect for deep water, variable water levels, or areas prone to waves and boat wakes. These docks float using robust polyethylene floats with pressure-treated support beams and aluminum frame construction. They maintain consistent dock height and are customizable for slips, fingers, and swim platforms.
A lightweight but durable option for calmer lakes, camps, and seasonal waterfront homes. The 5″ tubular frame is easy to handle and install — a go-to choice for DIY-minded property owners or those who want a simpler setup without compromising quality.
Need a quick setup and seasonal removal? These aluminum docks come equipped with durable wheels, making spring installation and fall takedown easy. Ideal for sloped or soft-bottom shorelines where dragging a dock in and out is impractical.
Get everything you need to build your own dock with Great Northern’s DockDIY™ kits. These include brackets, fasteners, and instructions — just add your choice of lumber. An economical option for handy homeowners who want total customization.
We also offer a wide range of accessories, including ladders, bumpers, cleats, benches, kayak racks, railings, and adjustable gangways to complete your dock system. All accessories are compatible with Great Northern Docks’ frame systems.