GustoMSC designed WTIV Blue Wind delivered to Shimizu Corp with World's First Telescopic LEC – Heavy Lift News
21 Mar 2023

GustoMSC designed WTIV Blue Wind delivered to Shimizu Corp with World’s First Telescopic LEC

The Japan Marine United (JMU) shipyard delivered the GustoMSC designed and equipped offshore wind turbine installation vessel (WTIV) named Blue Wind to Shimizu Corp. at the end of January. As the largest WTIV in Japan to date, the Blue Wind will enable Shimizu Corp. to efficiently install foundations and wind turbines and help meet the country’s growing demand for offshore wind power.

Shimizu Corp. selected GustoMSC to develop the large-capacity WTIV following a competitive bidding process in 2019. After extensive evaluations of the installation challenges offshore Japan, which include seasonal typhoons, earthquakes, and tsunamis, GustoMSC proposed the GustoMSC™ SC-14000XL tailored jack-up design with a large telescopic crane.



The WTIV design is specifically tailored to Shimizu’s requirements. The vessel is 142m long, 50m wide, and can accommodate up to 130 personnel. It is also equipped with the proven GustoMSC variable speed rack and pinion jacking system, providing great reliability, safety, and performance in even the harshest offshore conditions.


Photograph courtesy of  Shimizu Corp.

GustoMSC also delivered the world’s first fully integrated offshore telescopic leg encircling crane, which enables the vessel to install foundations and turbines. When deployed in a retracted mode, the crane has a safe working load of 2,500t with a lifting height of 118m above the deck. Keeping the crane boom in the retracted mode without an extension over the bow avoids sailing and maneuvering restrictions during transit and in port areas.


Photograph courtesy of  Shimizu Corp.

The crane can then easily transition to an extended mode to install turbines at a height of up to 158m above the deck and with a maximum safe working load of 1,250t. This innovation results in a state-of-the-art, competitive product for Shimizu’s large offshore wind turbine projects.

Their design proposal included several animations of the WTIV in action and a 1:20 scale model to demonstrate the functionality of the crane’s telescopic boom. Satisfied with the proposal, Shimizu approved the development of the Blue Wind vessel.


Photograph courtesy of  Shimizu Corp.

GustoMSC quickly went to work on developing detailed design specs for the integrated vessel and crane in close collaboration with the JMU shipyard. While their team had worked with JMU on previous projects, most of Shimizu Corp.’s approved Japanese vendors for power, propellers, and other services were new to them. All parties involved succeeded in creating successful working relationships during the challenging COVID pandemic.



Photograph courtesy of  Shimizu Corp.

Despite travel restrictions, NOV’s global presence helped keep the project on track. Their team designed, built, and delivered the first offshore telescopic leg crane to the JMU shipyard on time and on budget.

GustoMSC’s successful delivery of the world’s first telescopic leg crane on the largest WTIV in Japan is a testament to their engineering experts and ongoing technology innovations. They are happy to help Shimizu Corp. efficiently execute their projects and support Japan’s offshore wind ambitions.

Source GustoMSC


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