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Polyform A4 Buoys 710mm (L) x 550mm(D)

$89.75

(inc VAT)

In Stock
  • Reduced Carbon Footprint
  • Reduced Carbon Footprint
  • Patented Production Technology
Polyform Norway brand logo

The Polyform Norway A4 Buoy is a large, ultra-durable marine buoy engineered for heavy-duty mooring, marking, and flotation applications where strength, reliability, and long-term performance are non-negotiable. Manufactured in Norway to exacting standards, the A4 buoy is constructed from Polyform’s proprietary marine-grade PVC, delivering exceptional impact resistance, superior UV stability, and outstanding structural durability in the most demanding marine environments.

Built with seamless, one-piece construction, the A4 buoy is pressure-tested to ensure consistent performance under substantial load. Its thick, reinforced walls provide excellent resistance to abrasion, compression, and punctures, making it significantly more robust than lower-grade alternatives. Unlike inferior buoys that soften, distort, or degrade over time, the Polyform A4 is engineered to retain its shape, strength, and buoyancy season after season—even in high-stress conditions.

The Polyform A4 buoy is ideal for heavy-duty and professional mooring and marker applications, including:

  • Mooring larger yachts, workboats, and commercial vessels between 46-60ft

  • Marking anchor lines, channels, hazards, and navigation points

  • Supporting heavy floating lines, nets, and marine infrastructure

  • Commercial marine, aquaculture, and industrial use

Featuring a moulded-in rope hole, the A4 buoy allows for secure, reliable rigging without the need for additional hardware. This integrated design reduces potential weak points while improving overall handling, durability, and ease of deployment in real-world marine conditions.

Available in a range of high-visibility colours, the Polyform A4 buoy ensures excellent visibility on the water, enhancing safety and identification in all light and weather conditions. Whether used in busy harbours, exposed coastlines, or offshore environments, this buoy delivers dependable, long-lasting performance you can rely on.

Why Choose the Polyform Norway A4 Buoy?

  • Genuine Polyform Norway quality – the global benchmark for marine buoys

  • Tough, impact-resistant, UV-stabilised marine-grade PVC

  • Seamless, one-piece construction for maximum strength and reliability

  • Superior long-term buoyancy and shape retention

  • Designed for recreational, commercial, and professional marine use

  • Easy to rig with integrated moulded rope hole

  • High-visibility colour options for enhanced safety and recognition

If you need a buoy that handles serious loads, withstands extreme conditions, and delivers consistent performance year after year, the Polyform Norway A4 buoy is an industry-trusted choice.

  • Length: 71 CM
  • Width: 55 CM
  • Height: 71 CM
  • Diameter: 55 CM
  • Eye Diameter: 2.8 CM
  • Max Load: 54 KG
  • Gross Buoyancy: 90 KG

Our fenders (unless otherwise stated) are shipped deflated to save you money on shipping costs.

For next day deliveries, orders must be received before 11am.

Type

Courier

Price

UK Mainland (Large Letter 100g)

Royal Mail 24

£3.49

UK Mainland (Large Letter 100g)

Royal Mail 48

£2.95

UK Mainland NEXT DAY (0.1-10kg)

Royal Mail 24

£5.99

UK Mainland TWO DAY (0.1-10kg)

Royal Mail 48

£5.49

UK Mainland (10+ kg)

UPS

£8.99

UK Mainland Next Day (10+ KG)

UPS Standard

£12.99

View the full list of delivery rates here

Delivery Rates

Type

Courier

Price

UK Mainland (Large Letter 100g)

Royal Mail 24

£3.49

UK Mainland (Large Letter 100g)

Royal Mail 48

£2.95

UK Mainland NEXT DAY (0.1-10kg)

Royal Mail 24

£5.99

UK Mainland TWO DAY (0.1-10kg)

Royal Mail 48

£5.49

UK Mainland (10+ kg)

UPS

£8.99

UK Mainland Next Day (10+ KG)

UPS Standard

£12.99

Type

Courier

Price

UK Remote Area (Large Letter 100g)

Royal Mail 24

£3.49

UK Remote Area (Large Letter 100g)

Royal Mail 48

£2.95

UK Remote Area (0.1-10kg)

Royal Mail 24

£5.99

UK Remote Area (0.01-10kg)

Royal Mail 48

£5.49

UK Remote Areas (10-25 kg)

UPS Standard

£16.99

UK Remote Areas (25-50 kg)

UPS Standard

£19.99

Type

Courier

Price

Ireland, Germany, Belgium, Netherlands, France

UPS Standard (0-10kg)
UPS Standard (10-25kg)
UPS Standard (25-50kg)

£18.50
£19.99
£29.99

Austria, Denmark, Finland, Italy, Portugal Spain, Sweden, Czech Republic, Poland

UPS Standard (0-10kg)
UPS Standard (10-25kg)
UPS Standard (25-50kg)

£19.49
£20.99
£30.99

Channel Islands

UPS Standard (0-10kg)
UPS Standard (10-25kg)
UPS Standard (25-50kg)

£8.99
£23.99
£35.39

Andorra, Channel Islands, Liechtenstein Norway, San Marino, Switzerland, Bulgaria Croatia, Estonia, Hungary, Latvia, Lithuania Romania, Slovakia, Slovenia

UPS Standard (0-10kg)
UPS Standard (10-25kg)
UPS Standard (25-50kg)

£26.99
£29.99
£47.99

USA & Canada

UPS Standard (0-5kg)
UPS Standard (10-25kg)
UPS Standard (25-50kg)

£28.99
£44.99
£83.32

Singapore & Japan

UPS Standard (0-5kg)
UPS Standard (10-25kg)
UPS Standard (25-50kg)

£28.99
£44.99
£83.32

UAE

UPS Standard (0-5kg)
UPS Standard (10-25kg)
UPS Standard (25-50kg)

£59.99
£87.99
£159.99

Add Essentials

$23.11
$6.73
Polyform Norway
World-leading fender design, trusted by professionals since 1955.
Innovation, strength, and performance in every Polyform fender.
Polyform Norway created the world’s first inflatable fender and continues to set the global standard. Built using patented POLYMATIQ® technology and reinforced rope holds, each fender delivers unmatched durability and protection for boats of all sizes.

Choosing the Right Fender Size

Get the best protection for your boat by matching fender size to vessel length, mooring style, and conditions.

The right fender size makes all the difference in protecting your boat from impact damage. As a general rule, use one inch of fender diameter for every 4–5 feet of boat length, and always go larger for rougher waters or heavier craft. Consider how and where you moor — side-on docking needs more coverage than a fore-and-aft tie. Whether you need cylindrical fenders, spherical buoys, or specialist shapes, we’ll help you choose the right fit for peace of mind on the water.

View Complete Size Guide
Polyform A4 Buoys 710mm (L) x 550mm(D)
Dimension Lines
71cm
55cm
173cm

Polyform Fenders & Buoys are shipped deflated to optimise space and reduce transport costs. You will find below our inflation video which highlights how to inflate using our special footpump adaptor and also a downloadable user guide.

NOTE: ADAPTORS ARE NOT REQUIRED BUT CAN BE PURCHASED HERE

People are asking us

Absolutely. With years of hands-on experience, we can help customers choose the right size and type for their boat or operation. Whether you’re mooring a small leisure craft or outfitting a superyacht, we’ll make sure you get exactly what you nee
Our customers range from private boat owners to superyacht captains, harbour authorities, offshore crews, and commercial fleets. We work with both individual enthusiasts and major marine operations.
With over 17 years of experience, we know marine protection inside out. We don’t just sell products—we provide genuine advice based on real-world boating experience.

You can reach us by phone on +44 1543 279138 or email us at info@boatfendersdirect.co.uk. We’re available Monday to Friday (9:30 am–4 pm)

We offer next day and 2-4 days delivery option for UK mainland. Next day deliveries must be received before 12 noon and are for weekday only. Please allow 2-3 weeks for fender cover personalisation.

Yes—our support doesn’t end at checkout. If you have questions, need help with installation, or want to expand your fender setup, we’re here to advise. We’re proud to offer long-term, personal support, not just transactions.

Related Products

Customer Reviews

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Product Reviews

12 reviews for Polyform A4 Buoys 710mm (L) x 550mm(D)

5 Star
83%
4 Star
17%
3 Star
0%
2 Star
0%
1 Star
0%
★ ★ ★ ★ ★

Great service and prices,

★ ★ ★ ★ ★

Had already one A4 and added another two.

★ ★ ★ ★ ★

Very well made buoy, a great price and quick delivery

★ ★ ★ ★ ★

Great fenders that help keep our vessel from touching the pontoon even in the worst...

×

Product Reviews

12 reviews for Polyform A4 Buoys 710mm (L) x 550mm(D)

5 Star
83%
4 Star
17%
3 Star
0%
2 Star
0%
1 Star
0%
★ ★ ★ ★ ★

Great service and prices,

★ ★ ★ ★ ★

Had already one A4 and added another two.

★ ★ ★ ★ ★

Very well made buoy, a great price and quick delivery

★ ★ ★ ★ ★

Great fenders that help keep our vessel from touching the pontoon even in the worst of conditions that we have experienced this winter.

★ ★ ★ ★ ★

I purchased 3 buoys for use at a sailing club. They seem to be well made and robust and just what we need. I have only given 4 stars as I found them hard to inflate despite buying an adapter along with the buoys. The non return valve was extremely stiff which made getting air into them difficult. The instructions that came with the buoys suggested poking the non return valve with a fine object to open it. I was nervous not to puncture the valve but the aperture is small so a fine wire or small screwdriver was needed. This enabled the buoys to be inflated however the non return valve didn't close full afterward. It doesn't seem to be a problem as the cap screw seems to provide an airtight seal. By the way the buoys were dispatched promptly and well package so 5 stars to Boat Fender Direct.

★ ★ ★ ★ ★

Good product to protect our barge

★ ★ ★ ★ ★

Great product we are repeat customers

★ ★ ★ ★ ★

Does as its meant to do

★ ★ ★ ★ ★

Excellent product but slight difficulty to get adapter to seal when inflating

★ ★ ★ ★ ★

Perfecto done exactly what we wanted it to do

★ ★ ★ ★ ★

Excellent

★ ★ ★ ★ ★

Perfect!!!!!

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