Bastion was contracted to analyze the structural integrity of crane pedestals and immediate supporting structures on the starboard and aft port sides of a jack up vessel. These cranes are a pedestal mounted rotating crane and can be classified as a Type C. The starboard side crane pedestal was unique in it’s location on the vessel with half of the boom and pedestal located outside of the vessels main structure. Bastion generated the reports for strength and buckling assessments for both pedestals and their immediate supporting structure including main decks, machinery decks, tank tops and bulkheads. The analysis will verify that the design of the crane pedestal is in compliance with three codes, namely:

ABS guidelines ABS-152 “Guide for CERTIFICATION OF LIFTING APPLIANCES” OCTOBER 2006

API SPECIFICATION 2C, “Specification for Offshore Cranes”, Fifth Edition, April 3, 1995

ABS-126 “Guide for Buckling and Ultimate Strength Assessment for Offshore Structure” April 2004