After completing the platform installation operation, the hook up operation and the pre-commissioning and commissioning of the platform begin, in which accuracy and speed play the first role. The faster the hook up operation is completed, the faster it is set up and, consequently, the faster oil and gas extraction begins. Relying on Iranian power and knowledge, this company has been able to do a large part of the work related to hook up before installing the platform and on land to minimize the time of hook up operations at sea. The work available in hook up includes parts related to piping, structures, mechanical equipment, electricity, instrumentation and telecommunications, which according to the facilities and capable manpower of the company, all these activities with maximum accuracy and speed on phase platforms. 14D and 14C were performed and pre-launched. Considering that safety issues are the first priority of Lian Offshore Innovators Company, all these activities have been completed without any accidents.