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You are here: Home / glossary / Proof load

Proof load

Proof load

Created OnFebruary 6, 2018
byCult of Sea
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that tonnage value that a derrick or crane is tested to. The value is equal to the SWL of the derrick/crane + an additional percentage weight allowance, e.g. derricks less than 20-tonne SWL proof load is 25% in excess; derricks 20-50-tonne SWL proof load equals – 5 tonnes in excess of SWL; derricks over 50-tonne SWL proof load equals 10% in excess of SWL.

Related:

  • Dreadage or Dreading Clause
  • Timber
  • Displacement
  • Draftage
  • COA (Contract of Affreightment)
  • Net Registered Tonnage (NRT)

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