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SQUARE FENDERS

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LION SQUARE FENDERS

Features

  • Wide selection in various sizes and shapes
  • Easy for installation and replacement
  • Simple square design

Applications

  • Tugs & Boats
  • Vessels
  • Pontoon protection

Lion Square type fenders are used for tugs, barges, workboats and pilot boats as side belting and protective fenders against heavy rubbing, brushing and pushing forms. These SD type fenders display a higher energy absorption capacity, thus minimizing deface contact. These fenders can also be mounted quay are by means of anchor belts. Lion Square type fenders are supplied with D hollow, Rounded hollow or Solid. Long length Square fenders can be supplied to match the Aft or Bow radius.

SD Fender - Square with D-Hollow Fender

TYPE A B D1 øC E F U V FLAT BAR BOLT SIZE
LSD 100 100 100 50 15 10 25 90-130 200-300 50 x 6 M12
LSD 150 150 150 75 20 12 30 110-150 250-350 60 x 8 M16
LSD 200 200 200 100 25 15 45 130-180 300-400 80 x 10 M20
LSD 250 250 250 125 30 20 50 140-200 350-450 100 x 10 M24
LSD 300 300 300 150 30 25 60 140-200 350-450 110 x 12 M24
LSD 350 350 350 175 35 25 70 140-200 350-450 120 x 12 M30
LSD 400 400 400 200 35 30 80 140-200 350-450 130 x 15 M30
LSD 500 500 500 250 35 30 100 140-200 350-450 130 x 15 M36

SO Fender - Square with Round Hollow Fender

TYPE A B øC øD E F F1 U V FLAT BAR BOLT SIZE
LSO 100 100 100 15 50 10 25 50 90-130 200-300 50 x 6 M12
LSO 150 150 150 20 75 12 30 75 110-150 250-350 60 x 8 M16
LSO 200 200 200 25 100 15 45 100 130-180 300-400 80 x 10 M20
LSO 250 250 250 30 125 20 50 125 140-200 350-450 100 x 10 M24
LSO 300 300 300 30 150 25 60 150 140-200 350-450 110 x 12 M24
LSO 350 350 350 35 175 25 70 175 140-200 350-450 120 x 12 M30
LSO 400 400 400 35 200 30 80 200 140-120 350-450 130 x 15 M30
LSO 500 500 500 35 250 30 100 250 140-120 350-450 130 x 15 M36
  • All above dimensions are in mm. Above data is for reference purpose only.
  • Any customized Project & Product requirements can be catered by Lion Rubber’s Design & Development Team.
  • All grade Fender performance are available on request.

Square Fenders: Vital Protection for High-Impact Marine Operations

Square fenders are essential marine and industrial components, designed to provide optimal protection for vessels, docks, and terminals. These flexible fenders, particularly square boat fenders, are made to absorb strong impacts when docked or towed. Their square design helps distribute energy well, making them perfect for tight berthing spaces where regular fenders might not work as well. Premium rubber compounds make square fenders durable and resistant to harsh marine conditions.
Lion Rubber provides high-quality square fenders that ensure long-lasting performance and superior protection. Whether you’re in the shipping industry, harbor operations, or industrial dock environments, our square boat fenders are the perfect solution for maintaining safety and minimizing impact damage.

What is a Square Fender?

A square fender is a marine bumper designed to absorb impacts and protect against damage during berthing or tow operations. Its square profile provides a broad, flat contact surface, making it ideal for vessels that frequently come into contact with flat structures like quay walls, barges, or dock edges.
Unlike cylindrical fenders, square boat fenders offer greater surface coverage and are often mounted directly to the hulls of tugboats or fixed marine structures. Their flat design allows for stable positioning and effective shock absorption during repeated docking or pushing maneuvers.
Made from heavy-duty rubber, square fenders are engineered for durability, handling constant wear in demanding environments. They are often used in situations where accurate docking and strong energy absorption are very important. Whether protecting a tug’s bow or lining a busy dock, square fenders deliver reliable performance and long-lasting protection.

Key Features of Lion Rubber’s Square Fenders

At Lion Rubber, our square fenders are built to deliver reliable performance across diverse marine applications. Designed for durability and performance, these fenders merge innovative design with premium materials to guarantee a long lifespan even in challenging maritime conditions.

  • Wide Range of Sizes and Shapes

    Our square boat fenders come in various dimensions and profiles, suitable for different vessel types and dock structures. You can select the right fit based on your exact operational needs.

  • Compact, Sturdy Design

    Their compact yet heavy-duty construction makes them ideal for areas where space is limited but impact protection is vital.

  • Marine-Grade Rubber Compounds

    These fenders are made of tough rubber that can handle harsh conditions like saltwater, friction, and bad weather.

  • Flexible Installation Options

    Square fenders from Lion Rubber come with bolt-on and weld-on installation choices, depending on your mounting surface. This makes the setup quick and secure.

  • Easy Maintenance & Replacement

    Thanks to their simple design, replacing or maintaining these fenders is simple - minimizing downtime and maximizing vessel protection.

Applications of Lion Rubber's Square Fenders

Lion Rubber’s square boat fenders are strong and versatile for different marine settings. Their flat profile and tough construction make them ideal for demanding berthing conditions and heavy-duty marine operations.

  • Tugboats & Workboats

    Perfect for vessels that require direct pushing capabilities during docking and maneuvering, especially in tight spaces.

  • Ship-to-Ship Contact Zones

    As a buffer in ship-to-ship operations, these fenders provide excellent energy absorption and reduce hull damage risks.

  • Pontoon & Dockside Protection

    Square fenders are often mounted on pontoons and berths to absorb frequent contact from approaching vessels, protecting the structure and the boat.

  • Naval & Industrial Use

    Built to withstand rugged use, they are well-suited for naval fleets and industrial marine setups that demand high resilience and durability.

Product Variants & Customization Options

At Lion Rubber, our square fenders come in various configurations to suit different marine and industrial needs. Whether you’re operating in high-impact zones or tight docking areas, we provide reliable solutions with tailored performance.

We offer solid square profiles for maximum durability and hollow square profiles for better flexibility and energy absorption. Depending on your vessel or dockside requirements, you can choose from flat or grooved contact faces, each designed for optimal grip and surface protection.

Our customization options include:

  • Length adjustments to fit unique installation areas
  • Durometer (hardness) selection for different impact levels
  • Mounting hole configurations based on installation preferences
We offer stronger versions for uses that require heavy contact, ensuring more durability and a longer lifespan. With Lion Rubber, you get more than a product—a fender tailored for superior environmental performance.

Why Choose Our Square Fenders?

Choosing Lion Rubber’s square boat fenders gives you reliable protection made with quality and experience for tough marine conditions.

  • Precision Manufacturing

    Our square fenders are manufactured in-house using premium marine-grade rubber, ensuring consistent quality and performance. Every piece is tested to meet the rigorous demands of maritime operations.

  • Global Track Record

    Trusted by major ports, shipyards, and marine contractors worldwide, our fenders deliver reliable impact resistance and long service life across various vessels and structures.

  • On-Time Delivery & Support

    We pride ourselves on meeting deadlines. From quote to installation, our team offers prompt delivery and ongoing technical support to keep your operations running smoothly.

  • Custom-Tailored Solutions

    We offer customization in length, hardness, and mounting design to ensure your fenders fit your vessel or dock perfectly, delivering the best protection and operational efficiency.

Selecting the right D Fender ensures maximum protection for vessels, docks, and marine structures. Here are key factors to consider:

Built to Last: Durability & Maintenance Tips

Lion Rubber’s square fenders are built to last, even in tough marine conditions with saltwater, sunlight, and strong impacts. Their rugged rubber construction ensures a long service life with minimal upkeep.
We recommend periodic inspections to check for wear, surface damage, or detachment from mounting structures to maintain optimal performance. Regular cleaning with fresh water and mild soap helps remove salt deposits and grime, preserving the fender’s integrity.
These fenders are also compatible with standard marine paints and coatings, making them easily integrated into vessel maintenance schedules. With simple care, they’ll continue delivering high-impact protection for years.
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Frequently Asked Questions about Square Fenders

We offer square fenders in various sizes to suit different vessel and dock requirements. Custom sizing can be requested as needed.

Yes, our square fenders can be tailored in length, hardness, mounting options, and contact face design to match your vessel’s specific needs.

Depending on your vessel or dock structure, square fenders can be mounted using bolt-on or weld-on methods. Installation is simple and stress free.

Depending on the structure’s requirements, d Fenders can be installed on flat, curved, or angled surfaces using various mounting methods, including bolts, brackets, or chains.

What sizes of square fenders do you offer?   

Get Reliable Protection with Premium Square Fenders

Need a sturdy and efficient fendering solution for your vessel or dock? Contact us today for expert advice and a custom quote tailored to your needs.

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