Name: Submarine Fenders Marine Fenders Custom Size Available Top Level Natural Rubber ISO17357:2014 Standard
Brand: Hongruntong Marine Co., Ltd.
SKU: HM-SF19
Price: 4,001.00 USD
Availability: InStock

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Features

Specifications

Product Name: Submarine Fenders

Advantage: Customized, Original Factory

Warranty: 36 Months

Material: Top Level Natural Rubber

Pressure: 50 KPA ~ 80 KPA

Application: Dock

Diameter: 0.5 ~ 4.5m

Length: 1 ~ 12m

Standard: ISO17357:2014

Highlight:

Submarine fenders natural rubber

Marine fenders custom size

ISO17357 submarine fenders

Basic Infomation

Place of Origin: China

Brand Name: Hongruntong Marine

Certification: ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS

Model Number: HM-SF19

Payment & Shipping Terms

Packaging Details: Wooden Pallets, Wooden Cases or as Required

Delivery Time: 5-6 Work Days

Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram

Supply Ability: 1487 Units Per Months

Gallery

Submarine Fenders Marine Fenders Custom Size Available Top Level Natural Rubber ISO17357:2014 Standard

Product Description

Submarine Fenders Perfect Dock Berthing Protection Anti Collision Custom Size Available

Hongruntong Marine Submarine Fenders are high-performance marine protection systems designed for submarine docking operations, offshore maintenance facilities, shipyard berthing areas, and specialized marine engineering platforms. Manufactured using premium marine-grade rubber compounds with reinforced synthetic elastomers, these fenders deliver excellent energy absorption, low reaction force, and long-term structural stability in demanding ocean environments.

The fender design focuses on protecting submarine hull integrity by distributing berthing impact forces evenly across the contact surface. This prevents localized stress concentration that could damage sensitive coatings, sonar-related surfaces, and external structural components. Compared with conventional marine fenders, submarine fenders provide more controlled deformation behavior, higher durability under repeated compression, and improved performance stability under varying tidal conditions.

Hongruntong Marine offers customized submarine fender solutions in multiple sizes, hardness grades, and structural configurations. These systems are suitable for fixed quays, floating docks, dry docks, offshore platforms, and underwater maintenance bases. Optional enhancements such as corrosion-resistant chains, stainless steel fittings, and reinforced steel cores further improve durability and extend service life.

These fenders are widely applied in submarine berthing stations, large-scale ship repair yards, offshore engineering projects, and marine logistics terminals where operational safety, docking precision, and long-term reliability are essential requirements.

Case Study

A coastal shipyard in East Asia upgraded its submarine docking infrastructure after facing repeated issues with uneven load distribution and accelerated wear on hull coatings during maintenance operations for 3,800-ton submarines. Hongruntong Marine provided a customized submarine fender system with enhanced elastic recovery performance and optimized cylindrical geometry. After installation, docking stability improved significantly, hull contact stress was reduced, and maintenance efficiency increased due to smoother vessel positioning and reduced adjustment time during berthing operations.

Specifications

Product Name	Submarine Fenders
Material	SBR, NR
Size Available	3.3*10.6M
Tensile Strength	=> 18 MPA
Density	90+/-5
Colour	Black
Application	Submarine, ferry, oil rigs and so on
Hardness	40-70 Shore A
Elongation	=> 400
Tear Strength	=> 400 N/cm
Breaking Strength	>310
Chemical Resistance	Fuel A: No deterioration Oil 3: No deterioration Lubricating oil: No deterioration Cutting oil: No deterioration Dilute HCL: No deterioration

Diameter x Length	Initial Internal Pressure	Ship Radius	Water Ratio	Guaranteed Energy Absorption	Reaction Force at GEA	Hull Pressure at GEA	Deflection at GEA
1500 x 6100	50	3000	60%	131	562	140	51%
	80			186	754	188
1700 x 7200	50	4000	65%	167	682	137	47%
	80			239	918	184
2000 x 6000	50	4000	70%	135	544	131	41%
	80			194	736	177
2500 x 5500	50	4500	65%	225	769	135	41%
	80			322	1035	182
2500 x 7700	50	4500	70%	326	1016	136	41%
	80			470	1368	183
3300 x 6500	50	4500	75%	307	887	127	35%
	80			442	1203	173
3300 x 10600	50	5000	65%	1003	2137	142	47%
	80			1429	2863	190
4500 x 9000	50	5000	60%	1439	2401	138	46%
	80			2059	3228	185
4500 x 12000	50	6000	65%	1977	3198	141	46%
	80			2819	4277	189

Characteristics

Stable Energy Absorption Performance

Hongruntong Marine Submarine Fenders are engineered to deliver stable and predictable energy absorption during submarine docking operations. The internal rubber structure is designed to compress gradually under impact, ensuring that kinetic energy is evenly distributed across the fender body. This reduces sudden force transmission to submarine hulls and minimizes structural stress during berthing. The stable energy absorption system helps maintain consistent performance even under varying tidal conditions and repeated docking cycles, improving operational safety and reducing the risk of hull damage in sensitive marine environments.

High-Strength Marine Rubber Construction

The fenders are manufactured using high-quality natural rubber combined with advanced synthetic elastomer materials that provide excellent resistance to seawater corrosion, UV exposure, ozone aging, and long-term mechanical fatigue. Hongruntong Marine applies precise vulcanization technology and optimized material formulation to enhance elasticity, tensile strength, and wear resistance. This ensures that the fenders maintain structural integrity and performance stability even in harsh offshore environments with continuous exposure to extreme weather and high-frequency operational loads.

Flexible Engineering Customization

Each submarine docking project has unique operational requirements, including vessel size, displacement, docking speed, tidal variation, and berth structure. Hongruntong Marine provides fully customized engineering solutions tailored to these conditions. The engineering team conducts detailed load analysis and performance calculations to determine optimal fender dimensions, hardness levels, and installation configurations. Customers can choose from various mounting systems such as chain suspension, fixed bolt installation, and modular support structures. Optional accessories like UHMW-PE facing pads, corrosion-resistant hardware, and reinforced internal steel cores are available for enhanced performance.

Extended Service Life and Low Maintenance Design

Submarine docking systems require long-term reliability with minimal maintenance interruption. Hongruntong Marine Submarine Fenders are designed for extended operational life, maintaining stable performance under repeated compression and harsh environmental exposure. The rubber material resists cracking, deformation, and aging, ensuring consistent energy absorption over many years of service. This low-maintenance design reduces inspection frequency, lowers replacement costs, and supports efficient long-term operation for shipyards and offshore facilities.

Applications

Submarine Berthing and Maintenance Facilities: Submarine fenders are widely used in dedicated berthing stations where precise vessel positioning and hull protection are required during docking, inspection, and maintenance operations. Their low-reaction force design ensures safe and stable contact with submarine hull surfaces.
Shipyard Dry Dock Systems: Dry dock facilities use submarine fenders to stabilize vessels during repair, overhaul, and maintenance procedures. The fenders help reduce structural stress caused by tidal variations and improve docking efficiency during maintenance cycles.
Offshore Engineering and Support Platforms: Offshore platforms and underwater support bases rely on submarine fenders to ensure safe transfer and docking operations under wave-influenced and variable environmental conditions. The system provides reliable cushioning performance and structural protection in offshore environments.

Why Choose Hongruntong Marine

Deep Expertise in Marine Fender Engineering: Hongruntong Marine specializes in the design and manufacturing of advanced marine fender systems with a strong focus on submarine docking applications. The company has extensive experience working with global shipyards, offshore platforms, and marine engineering contractors.
Strict Quality Control and Premium Materials: All submarine fenders are manufactured using carefully selected natural rubber and synthetic elastomer materials that meet strict marine engineering standards. The production process includes comprehensive quality control at every stage.
Advanced Customization and Engineering Support: Hongruntong Marine provides full customization services including structural design optimization, hardness adjustment, mounting system configuration, and reinforcement solutions.
Reliable Global Service and Technical Assistance: The company offers complete technical support throughout the project lifecycle, including consultation, design assistance, installation guidance, and after-sales service.

FAQ

1. What types of submarines can use these fenders?

Hongruntong Marine Submarine Fenders can be customized for different submarine sizes and classes, with specifications adjusted according to displacement and docking conditions.

2. Are the fenders suitable for floating dock systems?

Yes. The fenders can be installed in both floating and fixed dock environments, including areas with significant tidal movement and wave influence.

3. How do the fenders perform in harsh marine environments?

The rubber materials are designed to resist seawater corrosion, UV exposure, ozone aging, and long-term mechanical stress in offshore conditions.

4. What customization options are available?

Customization includes size, hardness, structural reinforcement, mounting systems, and corrosion-resistant accessories based on project requirements.

5. What is the expected maintenance requirement?

The system requires minimal maintenance, with periodic inspection and basic cleaning being sufficient to ensure long-term stable performance.

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Contact Person :	Mr. William Lau
Tel :	+8618910539783
Fax :	86-10-8946-1910

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