Ship type notation for vessels arranged for lifting operations.
To ensure that the vessel is recognised for lifting operations within the capacity of the crane on board both when new and throughout its service life.
DNV’s CG2, crane product certificate, is recognised throughout the world as documentation of the highest crane quality. DNV may also, upon request, check and document that other regulations and requirements specified by the customer are complied with.
Vessels specially intended for lifting operations are totally dependent on the quality of the cranes and on the crane being fit for service. The requirements for the equipment notation CRANE are mandatory but equipment notation is not assigned in addition to the shiptype notation. The following steps have to be carried out:
Design approval of the entire ship with crane
Site and manufacturing survey
Load and functional testing
DNV’s “Rules for Certification of Lifting Appliances“ are generally considered to be the most complete and thorough crane certification standard published.
Crane Vessels are to comply with the ILO Convention No. 152 and are thereby accepted for lifting operations by all flag states. The required quality is ensured - both through the regular periodical surveys and occasional surveys necessary after repairs and modifications.
The DNV unit, acting as a contract partner for the crane certification, must ensure that the fee and other commercial conditions are agreed on and that the involved companies are informed about DNV’s requirements.
Our crane section will carry out a design examination and issue a Design Approval Letter.
Our local survey station at the manufacturer's premises will carry out a survey and issue a Manufacturing Survey Report.