Yokohama Rubber Fender Heavy Duty Floating Design Low Maintenance for Marine Applications

Yokohama Rubber Fender is a pneumatic marine protection system engineered for shipyard operations, vessel launching support, and dry-dock related handling processes where controlled load distribution and structural impact mitigation are required. The system consists of a high-strength airtight rubber body reinforced with multiple layers of synthetic tire cord, forming a flexible pressure-retaining structure capable of absorbing high contact energy through internal air compression.

The engineering principle is based on elastic pneumatic deformation. When subjected to external load, the internal air chamber compresses progressively, converting mechanical impact energy into controlled pressure variation. This mechanism reduces instantaneous force transmission and distributes load across a larger contact area, minimizing localized stress on vessel hull structures and supporting infrastructure such as slipways, docking blocks, and launching paths.

A commercial shipyard located in the Middle East required an upgrade of its vessel launching support system to accommodate increasing production of medium-to-large cargo vessels ranging between 20,000 DWT and 60,000 DWT. The existing launching arrangement relied on conventional sliding blocks and fixed rubber supports, which exhibited uneven load distribution and increased localized stress during hull transfer into water.

The primary engineering challenge was to reduce hull stress concentration during launching operations while improving structural control throughout the sliding and flotation transition phases. Variations in hull geometry and dry dock surface conditions further contributed to inconsistent load distribution during previous operations.

A pneumatic Yokohama Rubber Fender system was introduced along the launching path to provide continuous load absorption and controlled deformation during vessel movement. The fenders were positioned to create a flexible support interface between hull structure and launch pathway, allowing progressive energy dissipation during sliding motion.

Following implementation, vessel launching operations demonstrated improved load uniformity along the hull contact zone and reduced structural stress concentration during water entry phases. Operational teams reported smoother transition behavior during launching sequences and reduced requirement for corrective mechanical adjustments during alignment procedures.

Post-operation inspection confirmed stable structural performance of the pneumatic system under repeated launching cycles, with minimal material wear and consistent pressure retention. The system has since been integrated into standard launching procedures for similar vessel classes within the shipyard.

* Other sizes can be produced following client's requirements.

• Shipyard Vessel Launching Systems: Used in vessel launching operations where controlled energy absorption is required during hull transition from dry dock to water, ensuring structural safety and load distribution stability.
• Dry Dock Hull Support Systems: Applied in dry dock environments where vessels require temporary support during construction, maintenance, and inspection activities.
• Marine Repair and Retrofit Facilities: Used in ship repair yards for hull positioning and load distribution during heavy maintenance operations involving large vessel structures.

• Shipyard Engineering Application Expertise: Hongruntong Marine provides engineered marine protection systems specifically designed for shipyard operational environments, focusing on vessel launching dynamics, load distribution behavior, and structural interaction requirements.
• Precision Reinforced Manufacturing Process: Manufacturing processes emphasize reinforcement alignment accuracy, material consistency, and controlled assembly procedures to ensure structural stability under dynamic loading conditions typical in shipyard operations.
• Operational Load Simulation Based Design Support: Engineering teams evaluate vessel weight distribution, hull geometry, and launching conditions to design appropriate pneumatic fender configurations suitable for specific shipyard requirements.
• Global Marine Project Delivery Capability: The company provides technical support, logistics coordination, and installation guidance for shipyard projects across international markets, ensuring operational continuity and system reliability.