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Choose boat fenders by starting with your boat’s length, then matching their size, shape and placement to the hull and berth. A protected slip, exposed mooring, piling, raft-up or tidal dock can call for different protection; manufacturer size charts are starting points, not guarantees.
What size boat fenders do you need?
Use the boat-length range in the selected manufacturer’s chart to identify candidate fenders, then check the fender’s dimensions and intended application against the boat’s freeboard, likely contact points and docking conditions. Taylor Made describes its Hull-Gard chart as a minimum recommendation and advises checking with the marina and neighboring boaters about local conditions. Polyform’s chart distinguishes applications such as protected and unprotected moorings, pilings, rafting, and locks or concrete.
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These chart examples are from different product families and are not interchangeable prescriptions. Confirm current specifications for the model you are considering.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware match| Manufacturer chart | Boat-length range | Example fender dimensions |
|---|---|---|
| Taylor Made Hull-Gard | 10–15 ft | 4.5 × 16 in |
| Taylor Made Hull-Gard | 15–20 ft | 5.5 × 20 in |
| Taylor Made Hull-Gard | 20–25 ft | 6.5 × 23 in |
| Taylor Made Hull-Gard | 35–50 ft | 8.5 × 27 in |
| Taylor Made Hull-Gard | 35–50 ft | 10.5 × 30 in |
| Taylor Made Tuff End, a separate heavy-duty product family | Up to 30 ft | 6 × 25 in |
| Taylor Made Tuff End, a separate heavy-duty product family | 25–40 ft | 8 × 27 in |
| Taylor Made Tuff End, a separate heavy-duty product family | 40–50 ft | 10 × 30 in |
| Taylor Made Tuff End, a separate heavy-duty product family | 50–60 ft | 12 × 35 in |
Taylor Made lists additional Tuff End sizes for larger boats. Polyform’s chart covers length bands from boats up to 10 ft through 70 ft and above; at 20–25 ft, its listed options include F-1, F-02, F-2, F-3, G-4, HTM-1, NF-4, A-1 and LD-1. Use Polyform’s fender guide and Taylor Made’s Hull-Gard chart to check the options for your boat and use case.
#1 Best Overall
- NO MORE HANGING BUMPERS EVERY TIME YOU DOCK: Unlike boat fenders you must toss over and retrieve on every arrival, these mount permanently to your dock edge. A continuous barrier protects your hull and dock in any tide or current, ready before you are
- 5MM THICK MARINE-GRADE PVC: Engineered for extreme durability, these dock fenders are made from 5mm high-density PVC with reinforced ribs. UV and corrosion resistant material withstands harsh environments and temperature changes without cracking, ensuring year-round dock protection
- COMPLETE STAINLESS STEEL HARDWARE KIT: Everything you need for installation right out of the box. Each 2-pack comes with 8 premium stainless steel screws and washers. Mount them permanently to dock surfaces without worrying about rust or buying extra hardware. One person can install a full set in about 15-20 minutes with a screwdriver
- PRE-INFLATED & ADJUSTABLE FIRMNESS: Arrives pre-inflated and ready to install out of the box. Prefer a firmer bumper? Top up air in seconds through the standard needle valve with any ball pump (pump not included). Do not over-inflate
- UNIVERSAL FIT & SIZING GUIDE: Measuring exactly 15.4 inches x 6.5 inches x 5.3 inches inflated, these marine bumpers fit on most normal docks. We recommend 2 pieces for docks line under 10 feet, 3-4 pieces for 10-30 feet, 5-6 pieces for 30-50 feet, and 6+ pieces for over 50 feet. Requires a flush dock side - see fit notes below
Match fender shape to the berth
A fender must protect the part of the hull that can actually contact the dock or another boat. Consider the hull’s freeboard and shape, where it will rub or press, how much stand-off is needed, and whether contact is likely to be vertical or horizontal.
- Rafting: Polyform lists buoy-shaped A or LD series as options for rafting.
- Pilings: Polyform lists F and HTM options for piling applications. Taylor Made’s Big B has a center rope tube running end to end, allowing horizontal hanging around pilings and in areas affected by tidal change.
- Locks, concrete and tidal areas: Polyform describes its NF as an extra-tough recreational option for higher-stress use in locks and tidal areas.
These are manufacturer application suggestions, not independent comparative test results. Check that the chosen model’s dimensions and mounting orientation suit your hull and berth. A buoy-shaped fender may provide greater stand-off in some situations, according to Polyform.
Rank #2
- Add Protection Both Boat and Dock: Install the inflatable dock bumper fender on the side of the dock to protect the dock from being hit by boats and protect the boat from damage caused by contact with docks.
- Durable & Reliable Dock Bumper Fender: Constructed from marine grade rotomolded vinyl with sturdy ribs, featuring soft, tough, UV-resistant, impact-resistant and anti-tear to ensuring long-lasting protection for the boat and dock. The included mounting hardware are made of 304 stainless steel for rust-proof and long-lasting.
- Hassle-Free Mounting: Dock side bumper fender comes with 304 stainless screws and washers. Provide the convenience of permanently mounting dock fenders bumpers and secure attachment to your dock. No need to adjust fenders each time when docking.
- Special Design: Sturdy ribs of the dock fender bumper is durable enough to against impact. The round shape helps guide the boat down into the slip and reduce the rubbing.
- Dock Bumper Fender Sizes: The size of the dock fenders is 15.2" x 6" x 4" that fit various docking spaces. The mounting hole is at 6" from the top.
How many fenders should you hang, and where?
Polyform advises: “Use at least three fenders when docking.” Its suggested baseline positions are aft, at maximum beam, and forward. Hang them between the hull and dock where contact is likely. Add or reposition fenders if the hull shape or berth leaves other areas exposed; three is a starting arrangement, not a guarantee for every boat or condition.
Recommended Free Tools
There is no universal spacing distance for movable fenders in Polyform’s guidance. Position them to cover likely contact points rather than relying on a fixed measurement.
Rank #3
- 【Material】The boat fenders for docking made of high-quality vinyl,seamless one-piece construction prevents from splitting up and features a high performance of compression resistance; UV protection gives the boat fenders more power to outlast harsh weather. pontoon boat fenders with ribbed on all sides increase friction and resist abrasion, making it strong enough to withstand external force extrusion. marine fenders are necessities to minimize your boat damages and save repair cost
- 【Reinforced Twin Eyelets Design】Boat bumper eyelets are reinforced to prevent breaking in daily use. you can hang the bumpers for boats vertically or horizontally with the two eyelets according to your needs, easy to install and disassemble and help the boat dock fenders attach to boat more firmly. you don’t need to worry about it breaking due to excessive pulling,eyelets will provide strong support under any circumstances. white boat fenders is of much practicality for ship owners
- 【Protect Your Boat】Pontoon boat bumpers for docking great for protecting your boat from bumping and rubbing up against other boats and docks. These well made boat bumpers for docks play very important protective role in collisions caused by ships docking or sailing. for boats, docks, yachts,etc. greatly improve the safety of ship docking. We recommend all boats carry at minimum 3 fenders bumpers for boats. At least 1 boat bumpers white for every 10 ft of waterline length
- 【What You Getting】Pack contains boat bumpers for docking 4 pack 6.5 x 23",4 pcs boat fenders rope (3/8" Dia x 5' L),4 inflating needles and a pump to inflate. marine bumpers for boats very handy to use and take only 35 seconds to inflate,note:avoid over-inflating. How do they deflate? You can just insert the included needle into the valve and squeezing the air out, then removing the needle, would do the trick. boat fenders bumpers easy storage, boat bumpers easy to install and take off
- 【Wide Application】These boat bumpers are ideal for dock, yacht, sailboats, fishing boat, day cruiser, canoe, bass boats,pontoon, etc. boat dock fenders bumpers are 3.8mm thick to help protect against punctures and wear,providing reliable protection in harsh marine environments. for boats 20 to 28 ft, the 6.5-inch fenders is recommended, and for boats between 28 - 38 ft, 8.5-inch fenders for boat is ideal
How to attach fenders and choose line
- Pick a secure attachment point. Polyform recommends a cleat secured to the hull or deck, or the base of a rail stanchion. Do not treat an upper rail as a secure attachment.
- Match the line to the ropehold. Polyform recommends no less than 3/8-inch line for smaller fenders, increasing diameter with fender and ropehold size up to about 1 inch depending on the product. Its separate line guide says to use the largest diameter that fits. Check the specific model’s guidance.
- Choose a suitable line material. Polyform recommends nylon for its stretch and softer contact. It warns that line that is too small can concentrate wear against the ropehold, and its line guide says undersized line voids its warranty.
- Set a useful hanging length. Polyform’s line guide gives approximate lengths of 8, 9, 11 and 13 ft. These are guide values, not a universal fit; choose a length that puts the fender at the boat’s contact height.
Inflation and care for inflatable fenders
For its own products, Polyform specifies an inflation pressure of 2.1 lb/0.15 bar. Do not apply that figure to another maker’s fender; follow the instructions for the model in hand. Polyform warns that overinflation can reduce performance, cause premature failure and void its warranty.
If using Polyform’s no-gauge method, its instructions say to fill until the walls are fully expanded while retaining about 1/4 inch of depressibility under light hand pressure; the guide also gives circumference checks. Follow the product’s valve instructions: Polyform says its inflatable products can be deflated, with stated small-series exceptions. Polyform recommends storing fenders out of direct sunlight.
Quick Recap
Best Value
- Add Protection Both Boat and Dock: Install the inflatable dock bumper fender on the side of the dock to protect the dock from being hit by boats and protect the boat from damage caused by contact with docks.
- Durable & Reliable Dock Bumper Fender: Constructed from marine grade rotomolded vinyl with sturdy ribs, featuring soft, tough, UV-resistant, impact-resistant and anti-tear to ensuring long-lasting protection for the boat and dock. The included mounting hardware are made of 304 stainless steel for rust-proof and long-lasting.
- Hassle-Free Mounting: Dock bumper fender comes with 304 stainless screws and washers. Provide the convenience of permanently mounting dock bumpers and secure attachment to your dock. No need to adjust fenders each time when docking.
- Special Design: Sturdy ribs of the dock fender bumper is durable enough to against impact. The round shape helps guide the boat down into the slip and reduce the rubbing.
- Dock Bumper Fender Sizes: The size of the dock fenders is 15.2" x 6" x 4" that fit various docking spaces. The mounting hole is at 6" from the top.
Rank #4
- 🚢【IDEAL PROTECTOR】Dreizack Boat Fenders have a strong cushioning effect to protect boats from damage or scrapes due to severe collisions, especially when boats are docked or hit against other boats accidentally. Soft and smooth surface will not leave any marks on your boat. As a buoy, it is also great to have.
- 🏅【HIGH-QUALITY PVC MATERIAL】Our Boat Bumpers are rotomolded from marine vinyl,UV and chemical resistant.It protects it from discolouration from salt water or boat cleaners and is waterproof, freeze-proof, oil-proof, elastic, and age-resistant. 3.8mm thicker PVC material and the oval design enhances its shock and abrasion resistance.
- 🏆【DOUBLE HOLE DESIGN】Double hole reinforcement moulding can be hung vertically or horizontally. The boat fenders for docking are convenient to install and disassemble to help you protecting the boat flexibly any time.
- 🎯【PRACTICAL TOOLS】Our Inflatable Marine Pontoon Boat Accessories come with 4 x Boat Bumpers for docking, 4 x 3/8" Nylon Ropes(5ft in length), 4 x Inflating Needles, 1 x Storage Bag and 1 x Air Pump. Inflation takes only 35 seconds, it is easy to operate and storage.
- 👍【WIDE APPLICATION】This Boat Fender Bumper is perfect for docks, yachts, sailboats, row boats, ski boats, canoes, pontoons, fishing boats, buoys, etc. Dreizack will provide one-year warranty.
What to check before buying
- Boat length and the candidate models listed for it in the maker’s chart.
- Hull freeboard, shape and likely contact points.
- Berth conditions: protected or exposed, pilings, rafting, tidal change, locks or concrete.
- Fender dimensions, stand-off, shape and whether it can be mounted in the needed orientation.
- Whether the boat has secure attachment points and suitable line that fits each ropehold.
- Storage space and, for valve-equipped models, the maker’s inflation and maintenance instructions.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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