Superior Buoyancy and Controlled Ascent

The Boat Lift Helper provides exceptional lifting force, ranging from 1 ton to over 50 tons per bag depending on the model. The cylindrical design ensures even distribution of buoyancy, reducing rotational forces and minimizing tilt during ascent. Integrated pressure relief valves allow precise adjustment of buoyancy, enabling operators to perform slow, controlled lifts and prevent sudden rises that could endanger both divers and equipment. In addition, multiple inflation ports allow sequential or parallel inflation, further enhancing stability during complex underwater lifts.

Durable Tear Resistant Construction

Constructed from high-strength double-coated PVC or polyurethane fabric, the Boat Lift Helper resists abrasion, punctures, UV exposure, and saltwater corrosion. RF-welded seams provide superior airtightness, ensuring the bag maintains its rated buoyancy even after repeated use. Reinforced webbing straps and stainless-steel D-rings offer secure attachment points for a variety of rigging configurations. In internal testing, bags maintained 98% of their original buoyancy after 100 inflation/deflation cycles, demonstrating long-term durability and reliability.

Rapid Deployment and User Friendly Design

The lift bag’s lightweight, rollable design allows easy transport to the operational site, even in remote or hard-to-access areas. Standard scuba or low-pressure air fittings enable quick inflation, reducing deployment time significantly. Reinforced straps and attachment points allow divers to secure the bag to vessels or equipment in seconds. The compact design also facilitates storage, reducing logistical challenges for marine contractors or emergency teams. Operators can combine multiple bags for heavier loads, creating flexible configurations that adapt to various lifting scenarios.

Enhanced Safety and Monitoring Features

Safety is paramount in underwater lifting, and the Boat Lift Helper is equipped with high-visibility panels, color-coded straps, and optional lift indicators for surface monitoring. Anti-tear patches and secondary securing straps provide an additional layer of protection against sharp or jagged surfaces. These safety enhancements ensure that divers can maintain precise control of the load while minimizing risk. Operational guidelines recommend gradual inflation and continuous monitoring, which, combined with the bag’s robust design, significantly reduce the potential for accidents during lifting operations.

Applications

Boat and Yacht Salvage

The lift bag is ideal for recovering sunken boats, yachts, or small commercial vessels. Its controlled buoyancy and stability allow divers to lift vessels gradually and safely, reducing the risk of damage to the hull. Operators can combine multiple lift bags to handle larger vessels, ensuring balanced weight distribution and preventing rolling or tilting during ascent.

Marine Construction and Infrastructure Maintenance
In underwater construction projects, the Boat Lift Helper supports the installation and removal of pilings, anchors, pipelines, and subsea structures. Its streamlined cylindrical design minimizes lateral forces and drag, enabling precise positioning of heavy objects even in strong currents. The lift bags facilitate accurate alignment of structural elements, improving overall project efficiency and reducing labor costs.

Emergency Salvage and Rescue Operations
During disaster response or emergency scenarios, the lift bag stabilizes overturned vessels, assists in underwater recovery, or provides temporary flotation support for submerged equipment. Its rapid deployment capability ensures that operations can begin quickly, while reinforced construction and safety features guarantee reliable performance under challenging conditions.

Versatile Industrial and Offshore Applications
The modularity of the Boat Lift Helper allows it to adapt to both small-scale lifts and large, complex operations. From offshore platforms to industrial marine projects, the lift bag integrates seamlessly with cranes, winches, and other rigging systems, offering a reliable solution for diverse underwater lifting challenges. Its durability ensures longevity even in high-frequency usage environments.

Why Choose Hongruntong Marine?

Innovative RD and Product Development

Hongruntong Marine invests heavily in research and development to ensure the Boat Lift Helper meets evolving operational needs. Advanced 3D modeling, hydrodynamic simulations, and stress analysis allow engineers to optimize buoyancy distribution and minimize tilt or sway during underwater lifts. Prototypes are tested in controlled pools and real-world marine conditions, with data used to refine bag design, valve performance, and attachment points. This continuous innovation ensures our lift bags deliver maximum stability, efficiency, and safety across a wide range of applications.

Rigorous Manufacturing Standards and Quality Control

All Boat Lift Helper units are produced in ISO 9001-certified facilities. Each step—from raw material inspection to final product testing—adheres to strict quality standards. Reinforced fabric, RF-welded seams, and stainless-steel components are verified for strength and durability. Hydrostatic testing ensures buoyancy capacity and leak-free performance, while serial numbers enable traceability and maintenance tracking. This rigorous manufacturing process guarantees that every lift bag meets or exceeds international marine equipment standards.

Proven Performance in Global Projects

Hongruntong Marine lift bags have been deployed in over 30 countries, including Europe, North America, and Southeast Asia. Case studies demonstrate successful recovery of vessels ranging from small yachts to multi-ton industrial equipment. For example, in Norway, our lift bags facilitated the recovery of a 300-ton floating dock section. In Singapore, multiple lift bags enabled safe and efficient relocation of a 25-ton cargo barge. These global deployments validate the reliability, durability, and operational excellence of our products.

Comprehensive Customer Support and After-Sales Service

We provide full technical guidance, including detailed manuals, training videos, and on-site operational support. Spare parts such as valves, straps, and connectors are readily available. Our engineering team can assist with lift planning, deployment strategies, and emergency operations. Customers benefit from proactive maintenance advice, operational best practices, and continuous technical support, ensuring safe, efficient, and long-lasting performance of Boat Lift Helper units in all marine environments.

FAQ

1. What lifting capacities are available?
Boat Lift Helper units range from 1-ton to 60-ton buoyancy per bag. Multiple bags can be combined for larger lifts. For example, three 20-ton bags can lift a 60-ton load safely. Capacity selection should consider load weight, balance, and environmental conditions.

2. How should the bags be inflated and monitored?
Use standard scuba cylinders, surface-supplied air, or low-pressure compressors. Inflate gradually while monitoring the load’s ascent to prevent sudden rises. Overpressure relief valves should always be engaged, and divers should continuously observe bag position during inflation.

3. What maintenance is recommended?
After use, rinse with fresh water to remove salt, debris, and chemical residues. Inspect seams, valves, and straps for wear before storage. Store deflated and rolled in a dry, shaded area. Routine inspection every six months or after heavy lifts will ensure a service life of 8–12 years.

4. Can the bags be used with existing lifting equipment?
Yes. Reinforced D-rings and webbing straps are compatible with shackles, chains, winches, and cranes. Operators should ensure balanced attachment points and consider using multiple lift bags for heavy or irregular loads to maintain stability and control.