DOOWIN lifeboat load test water bags system is widely used for the distributed proof load testing for the lifeboat, gangway and other equipment that need distributed load testing.
Lifeboat load test water bags are sausage cylindrical shape. It is made of heavy-duty PVC coating fabric. Each lifeboat testing bags equip fill valves, handles, and automatic relief valves. The relief valves can open once the water bags achieve the designed weight.

Our load test water bags are manufactured from SGS certificated heady duty fabric, HF welded, no glue used.

Lifeboat testing bags equip with auto pressure relief valves. It can open when pressure reach rated valve.

There is one air valve on top. It can release the inside air to ensure filling the water bag completely.

Other capacity or size lifeboat test water bags are available. We also can change its design and structure.
The load test water bag system provides a comprehensive solution comprising pre-configured kits for 8-unit setups or customizable multi-bag combinations, allowing for virtually unlimited test weight configurations.
Engineered with uncompromising commitment to quality and safety, the system features:
This integrated approach significantly enhances operational safety while optimizing workforce efficiency during load testing procedures.
DOOWIN lifeboat load test water bags include below common sizes from 100kg to 600kg. But we can also supply other capacities or size lifeboat water bags upon customer request. And we can also change its design and structure according to customers’ special request.
Model | Capacity | Diameter | Length | Dry Weight |
|---|---|---|---|---|
LBT-100 | 100 KG | 440 mm | 850 mm | 6 kg |
LBT-250 | 250 KG | 500 mm | 1600 mm | 7 kg |
LBT-375 | 375 KG | 520 mm | 2100 mm | 9 kg |
LBT-400 | 400 KG | 520 mm | 2250 mm | 10 kg |
LBT-500 | 500 KG | 520 mm | 2650 mm | 12 kg |
LBT-600 | 600 KG | 600 mm | 2500 mm | 15 kg |
Note: The above specifications are only for reference. We may change its parameters according to our design.






DOOWIN is committed to providing high quality proof-load testing water weight bags and air lifting bags for our customers worldwide.
Gangway water bags are used for the load testing of gangways, accommodation ladders, small bridges, platforms, floors, and other long structures.
Floor testing water bags are specially designed for best fit on floors platforms, bridges, elevators, hydrauic loading ramps or decks to test to the highest standards.
For static and dynamic lifeboat davit load test, Lifeboat davit load testing is safely and efficiently achieved using water-filled weight water bags.
Water-filled proof load bags offer an easy, safe, and cost-effective way to load test lifting equipment and load-bearing structures.
DOOWIN maintains an extensive inventory of proof-load testing equipment, such as water-weight bags, load cell/Dynamometers, wire ropes, round slings, pumps, and water hoses. Our engineers and workers are very experienced with load testing.