aka self-erecting, leapfrog or bootstrap cranes
A lifting device that is not part of the original platform design and installed for a specific application or task and will not remain as a permanent part of the facility.
NOTE A temporary crane can be certified to API 2C or other justification by engineering analysis, review and materials of construction.
Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards