Water bags | Crane load testing

Solutions for hoist testing and crane certifications. 

SYM Naval’s load tests with water bags allow your project to move safely faster and with the confidence and quality of a professional team with an experience of more than 25 years in the sector.

SYM Naval uses materials with the highest performance to perform load tests of up to 120 tons. Water bags used in load tests are manufactured with high resistance fabrics, equipped with drain valves, filling hoses and lifting belts, all of which guarantees a safe process.

A fast and safe system to perform gradual load tests. 


Fast and reliable

Water bags are easier to fill than sandbags. This ensures a faster service. In addition, performing load tests with water bags reduces costs and are easy to transport, store and handle, thus reducing times.


Professional service

SYM Naval has a technical team and operators with many years of experience, and trained to perform load tests that yield reliable results. The company offers a professional and personalized service. The wide range of sizes, with water bags of different load capacities, allows to make reliable hoist testing following the specific requirements of each project.

A reliable and quality service thanks to a professional technical team.


In addition to water bag loading tests, SYM Naval is a technical assistance specialist with worldwide coverage in port, at sea and in dry dock. The company has a shipyard in Barcelona and a naval workshop in the Caribbean. From these strategic bases SYM Naval constructs, converts and repairs all types of ships giving international coverage.





Available to assist ships
24 hours a day,
365 days a year

Contact with us

The information you send through this form is personal and, therefore, we need to remind you of your data protection rights. The Data Controller. We inform you that your data will be processed by SHIP & YARD TECHNICAL MANAGEMENT S.L., as responsible for this web. Purpose. We ask for your name, email and telephone number on this form in order to answer your query; by sending this information you will NOT be subscribing to any mailing list nor will you receive commercial news on a regular basis. Legal Basis. By checking the box shown above, you are giving your consent for your data to be processed in accordance with the purpose of this form which is established in our Privacy Policy. Click here to read it. Security. The data you send will be secure and will be stored at our offices at Muelle Comercial S/N – 08800 Vilanova i la Geltrú (Barcelona), which meets the highest security standards. Rights. You can exercise your rights of access, rectification, limitation and erasure of your data by sending an email to legal@sym-naval.com.

Need more information?

Contact SYM Naval and receive professional guidance