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Our simple idea that changed the world of load testing

Whale and Crane

Our proof load bags can test structures up to 1000 tonnes.

Capable of testing extreme heavy loads, our original proof load bags offer considerable savings in transport, storage, and labour costs.

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Latest news

  • 17/09/2018

    Come See Us @ The International Workboat Show

    Booth #2204. We pioneered the use of water-filled bags for proof load testing back in 1979. We continue to lead the field, with a range of products for rent and sale worldwide, together with a comprehensive expert...
  • 12/09/2018

    Water Weights is Expanding!

    We are proud to announce that Water Weights is now part of the Unique Group of companies. Founded in 1993 Unique Group are a market leader in the delivery of engineering expertise, sales and rental equipment, and the...
  • 22/03/2018

    Certification Statement

    A certification statement is usually expected or required on the document.  The authority of reference, compliance verification, date of inspection/certification and the surveyor’s qualification should be...
  • 15/03/2018

    Limitations & Comments on Inspection Certificates

    Limitations/Comments are necessary to define the scope of the inspection.  This is the space to note any caveats or disclaimers.  Such topics as single line limitation, no jib or extensions, less than...
  • 21/12/2017

    Tests performed must be defined on the certificate.

    "Tests performed must be defined on the certificate. Completeness suggests that all tests be noted on the certificate so that there is no doubt as to the thoroughness of the survey. Most authorities that specify...
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Latest tweets

  • "Every year, the Occupational Safety and Health Administration (OSHA) releases the Top 10 Most Frequently Cited Sta… twitter.com/i/web/status/1…
  • "SHAMOKIN DAM — Operator error caused a crane accident that created two days worth of traffic jams in August, accor… twitter.com/i/web/status/1…
  • "When planning to design lifting beams (or any other below-the-hook lifting devices), there are many aspects that m… twitter.com/i/web/status/1…
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Water Weights is now part of Unique Group.

You can browse Unique Group's full Buoyancy & Ballast offering of products and services via the button below. Please contact us if you have any questions.

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