Six Thrusters Installed in 52 Hours
With a threatening typhoon looming, a semisubmersible accommodation unit under construction at Chinese shipbuilder COSCO’s Qidong offshore-focused shipyard saw all six of its thrusters installed in record time.
According to the builder, the thrusters’ installation process was completed in a mere 52 hours, breaking COSCO’s previous record of 72 hours for offshore thruster installation.
The unit, being built for the Mexican buyer Cotemar, was towed to anchorage at 2 a.m. on July 3 after very thorough preparation, and by 11 a.m., the unit was ready for the first thruster to be installed.
Despite “huge and frequent waves” ahead of the imminent typhoon Chan-hom, COSCO said the installation team was able to install all six thrusters by 3 p.m. on July 5, smashing the 72-hour record set on its sister unit.
Following the thrusters’ installation was testing and verification of the unit’s service speed, DP3 dynamic positioning system and the Failure Modes and Effects Analysis (FMEA) during sea trials. In fact, the loading test on the first thruster was finished at 11 p.m. on July 5, just hours after completing installation.