Close-up of a dock cleat on wet wooden planks at the edge of a lake, with rocky shoreline and trees visible in the background.
A small sailboat with two people on a lake near Great Northern Docks, birds soaring above, all surrounded by a compass rose design.

Boat Dock Bumpers & Tie-Up Accessories

Protecting a dock starts with the right bumper for your setup. Great Northern Docks carries boat dock bumpers, fenders, cleats, and tie-up accessories compatible with virtually any dock system — including Dura-LITE, Feather-LITE, and wood docks. Great Northern Docks bumpers are ideal for protecting your boat in freshwater and saltwater environments, built in Naples, Maine since 1979.
Black and white compass rose with eight main points and decorative outer rings, featuring a fleur-de-lis at north—perfect for accenting Great Northern Docks or Maine Docks.

Find the Right Fit for Your Waterfront

Browse Guardian bumpers, corner bumpers, inflatable fenders, and edge guards. Each product page includes compatibility notes so you know what works with your dock before you buy.

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  • 47 Years in Business
  • Made in Maine
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Prefer to talk? Call us at +1 (207) 693-3770 Mon–Fri, 8:30am–5:00pm

See What Our Customers Say

...the entire experience was professional but also stress-free and fun. Best of all, we got the dock of our dreams...

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From Destin’s welcoming greeting when we entered the store, through the dock design process, delivery and installation by Tino to the final product… the entire experience was professional but also stress-free and fun. Best of all, we got the dock of our dreams.

Rebecca Poma
Maine
Rebecca Poma
Maine

...LOVE THE PRODUCT, super high quality! Shipping to Alabama was great! Love my "Great Northern Dock" stairs down here in the south!

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I worked with Gretta ordering the dock stairs descending into the water. Since I could not see the product, I was a little nervous ordering on my own. Gretta helped answer all my questions, and helped me figure out the best system for my situation! I don’t think I would have purchased had she not been such a great help. LOVE THE PRODUCT, super high quality! Shipping to Alabama was great! Love my “Great Northern Dock” stairs down here in the south!

Carol Smyser
Alabama
Carol Smyser
Alabama

...Their product is unmatched in Quality, Longevity and Look. There is no application or shoreline their docks can't accommodate. Not only are Great...

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Great Northern Docks is a first-class company with the best product on the market. As one of the larger dock installation companies in southern Maine I have worked directly with Great Northern for years. Their product is unmatched in Quality, Longevity and Look. There is no application or shoreline their docks can’t accommodate. Not only are Great Northern Docks in a class by themselves they are also the most installer friendly dock systems on the market. My dock business has been exclusively with Great Northern for years and they will always be the only company I will work with. From start to finish you will never be disappointed investing in a Great Northern dock system.

Shoreline Solutions LLC
Maine
Shoreline Solutions LLC
Maine

I just wanted to thank you for your help.  I LOVE my dock stairs! I was nervous to order a big ticket item half the country away but your kind attitude and help

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I just wanted to thank you for your help.  I LOVE my dock stairs! I was nervous to order a big ticket item half the country away but your kind attitude and helpful answers gave me a sense of security. I just wanted to thank you for your help.  So, all the way from Minnesota,  I send a shout out: “Yay for Seth! ”Thanks again,

Linda
Minnesota
Linda
Minnesota

I purchased a new dock this season from Great Northern Docks and was extremely happy with the quality and service. From the initial site review, where the team

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I purchased a new dock this season from Great Northern Docks and was extremely happy with the quality and service. From the initial site review, where the team came out and created options on paper, to the prompt delivery, everything went smoothly. When my installers were short some pipe, I called and GND quickly cut a 20’ pipe into two pieces and had it ready to go within the hour for no extra charge. They also gave me a refund for a few extra pieces that I had left over after installation.The dock itself is great looking, well constructed, and very functional for fun summer days on the lake; whether boating or just relaxing on the dock. Thank you GND!

Eric Miller
Maine
Eric Miller
Maine

Lindsay and the team at Great Northern Docks provided excellent support and guidance in the entire process of selecting the appropriate dock

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Lindsay and the team at Great Northern Docks provided excellent support and guidance in the entire process of selecting the appropriate dock that meets our needs and budget. Assembly was straightforward and the quality of the material as well as the craftsmanship was excellent. My wife and I are looking forward to adding additional accessories next year.

Christopher Cortez
Maine
Christopher Cortez
Maine
Fully Welded Stairs with railings lead through trees to a Maine dock over clear, shallow water, with sunlight streaming through the leaves.

Stairs

Easy-to-install, multi-purpose outdoor stairs.

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FAQ

What is a dock bumper?

A boat dock bumper is a protective barrier mounted to a dock to deflect or absorb impact between a boat and the dock. Bumpers protect the hull from scratches and dents, protect the dock from wear, and reduce injury risk for people on the dock. Use them alongside boat fenders, not instead of them.

How long do dock bumpers last?

UV exposure and corrosion shorten lifespan the most. Freshwater environments extend it compared to saltwater. Pairing bumpers with boat fenders is required to properly protect your boat and dock system. Great Northern Docks bumpers are covered under our warranty.

What makes a dock bumper durable?

Dock bumper durability is determined by material composition, UV stabilization, and mounting infrastructure. Great Northern Docks fabricates bumpers from high-density marine-grade polyethylene and polymers engineered to withstand extreme freeze-thaw cycles, saltwater corrosion, and high-kinetic impacts. Reinforced dual mounting points ensure the profiles remain structurally secure under heavy structural loads

Which bumper works with my dock type?

The Guardian bumper with no brackets can bolt to almost any dock with the right hardware, making it the most universal option we carry. Guardian bumpers with pipe brackets fit any 1.5″ Schedule 40 pipe leg dock. Snap-On Guardian bumpers are compatible with Dura-LITE stationary and floating docks only. Corner bumpers work on Dura-LITE and wood docks. Edge Guard and C-Shape fenders can be screwed into any wood dock and most aluminum docks.

Which dock bumper is best for a pontoon boat?

For pontoon boats, the Guardian Bumper (36″ polyethylene) and Corner Bumpers are the most common choices. The Guardian Bumper provides a deflective barrier between the boat and the dock, protecting aluminum tubes from rubbing against the dock edge. Corner Bumpers cushion exposed dock corners that can scratch or dent pontoon rails. Both are built from marine-grade polyethylene that resists UV damage and won’t mark your boat.

What is the difference between a dock bumper and a boat fender?

A boat fender attaches to the boat and protects the boat from impact during docking. A dock bumper mounts to the dock and protects the dock from wear and impact. We recommend using both together for the best protection.

Boat Dock Bumpers and Fenders for Better Protection

A well-protected dock setup should include both dock bumpers and boat fenders. Dock bumpers help protect the dock structure, while boat fenders create a cushioned barrier between the boat and the dock. Used together, they help reduce everyday wear from wind, waves, wakes, fluctuating water levels, and regular boat docking.

The right bumper and fender setup depends on your dock layout, boat size, and how exposed your waterfront is to wind and wave activity. Wood docks, aluminum docks, floating docks, and stationary docks can all benefit from added protection along the sides, corners, and other high-contact areas where boats tend to rub, bump, or pivot.

The Guardian Bumper, designed by Great Northern Docks, is a durable option for many dock styles and can be mounted in different ways depending on the dock structure. Pipe brackets work well for docks with 1.5″ Schedule 40 pipe legs and allow for easy height adjustment as water levels change. For Dura-LITE dock frames, the Snap-On Guardian Bumper is designed to mount horizontally without drilling or altering the frame. For other dock styles, including many wood docks and non-GND dock systems, Guardian Bumpers can often be mounted with drill-through bolts, washers, and nuts, or with lag bolts when appropriate for the structure.

Edge Guard and corner bumpers can also be added to dock edges and corners for extra protection, especially in areas that see frequent boat contact. These products work best as part of a fuller protection setup, not as the only point of defense.

Boat fenders are just as important for protecting the boat itself. Inflatable fenders move with the boat, help absorb impact, and reduce friction between the hull and dock. Most boats should have multiple fenders placed along the areas most likely to make contact, such as near the bow, stern, and mid-hull.

On larger lakes, open water, or waterfronts with heavier wave and wake activity, additional coverage is often worth considering. Long dock bumpers, corner protection, wheel bumpers, and properly placed boat fenders can all help create a more complete barrier between the boat and dock.

Not sure where to start? Give us a call. We’ve been putting bumpers on Maine docks since 1979 and have probably seen your exact situation before.

A wooden dock with chairs overlooks a calm lake, surrounded by trees. A sailboat floats nearby, and a lifebuoy hangs from the Maine Docks railing.
Two people in swimsuits joyfully jump off a Great Northern Docks wood dock into the water, with a bench and bottle resting on the dock.

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