Deepdish to order

Japan Drilling Company's semisubmersible drilling rig Hakuryu-5 was recently upgraded with Exmar Offshore's Deepdish pontoon sponson, an innovative combination of pontoon sponsons and integrated cross bracing designed to increase the capabilities and operating life of ageing rigs. Exmar's Joel Wetmore and Ed Nagel discuss the design process that led to the successful application of the Deepdish concept.