Ship Launching Balloon Easy Handling Strong Buoyancy Cost Effective Use

The Hongruntong Marine Air Bag is an advanced inflatable launching and lifting solution designed for modern shipyards, offshore engineering projects, and heavy-load industrial transport. Engineered with multiple layers of high-strength synthetic fibers embedded within elastic rubber matrices, these air bags provide uniform load distribution and controlled deformation under dynamic and static loads. Unlike rigid rollers or dry dock systems, marine air bags offer flexibility to accommodate irregular hull shapes, uneven ground surfaces, and tidal or water-level variations. Their robust outer layer ensures resistance to abrasion, seawater corrosion, and UV damage, while internal cord reinforcements deliver exceptional tensile and shear strength. The combination of high load capacity, ease of deployment, and minimal infrastructure requirements makes Hongruntong air bags ideal for ship launching, vessel hauling, heavy module lifting, and underwater buoyancy applications. These bags are designed and tested in accordance with ISO 14409, ensuring predictable performance, durability, and operational safety in demanding environments.

In 2023, a European shipyard tasked with relocating a 2,500-ton ferry for maintenance operations employed Hongruntong Marine Air Bags to execute a rolling haul from a concrete berth to a nearby floating dock. The shipyard faced tight space constraints and a slight gradient along the path. Twelve 1.5-meter-diameter × 15-meter-long air bags were deployed under the vessel's hull, forming a load-sharing matrix designed to evenly distribute weight and prevent stress concentrations. Each air bag was inflated to a carefully calculated pressure, and the vessel's forward movement was guided by synchronized winches. The air bags rotated smoothly under compression, compensating for minor surface irregularities and maintaining consistent hull elevation. The operation was completed in a single day with zero hull damage, showcasing the reliability of air-bag-based rolling systems for mid-sized vessels and proving the technique as a cost-effective alternative to traditional dry-docking and slipway methods.

* Other size can be provided follow client's requirements.

• Customizable Size and Load Capacity - Air bags can be tailored in diameter, length, and reinforcement density to meet vessel-specific weight requirements. This scalability allows deployment across a wide range of ship sizes from small patrol boats to ferries and offshore support vessels.
• Enhanced Safety Through Controlled Deformation - The multi-layer reinforcement ensures predictable rolling and compression behavior, reducing the risk of hull instability or tipping during launch or transport.
• Durable Surface for Harsh Environments - Outer rubber layers resist abrasion from concrete, steel, and gravel surfaces, as well as UV radiation, seawater, and chemical contaminants, ensuring long service life and minimal maintenance.
• Quick Deployment and Ease of Operation - Air bags are lightweight relative to traditional rollers and can be moved or repositioned by standard lifting equipment. Inflation and deflation are simple, enabling faster project timelines and flexible operations in constrained spaces.

• Ship Launching and Hauling - Ideal for rolling vessels on land or toward floating docks, even in areas without permanent slipways or traditional infrastructure.
• Heavy Lift Operations - Useful for lifting and transporting large industrial modules, prefabricated marine structures, or offshore equipment safely and efficiently.
• Underwater Buoyancy Support - Provides controlled flotation for submerged installations, pipeline handling, or salvage operations, offering adjustable buoyant force with predictable stability.

• Tailored Engineering Solutions - Expert team designs bag layouts, calculates load distribution, and provides simulations to optimize vessel movement and reduce risk.
• Global Track Record - Hongruntong bags have been successfully deployed in Europe, Asia, and the Middle East for ship launching, offshore projects, and heavy industrial transport.
• High Quality Manufacturing Standards - Each bag is manufactured under ISO 14409 and ISO 9001 standards, with rigorous testing of pressure retention, tensile strength, and layer bonding to ensure reliability.
• Ongoing Support and Maintenance - The company provides on-site supervision, user training, inspection schedules, and lifecycle maintenance guidance to ensure long-term operational safety and efficiency.