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xxx 2013-01-29

Barge Master launches first motion compensation platform

Barge Master launches first motion compensation platform

osch Rexroth develops unique drive and control solution to keep platforms stable for offshore cranes

Barge Master BV, a Dutch company, has installed Rexroth motion compensation to neutralize waves and enhance the usefulness and safety of offshore cranes.

Barge Master launched the BM – 001, its first operational motion compensation platform in December to provide stability and safety to offshore crane operations. The moving platform utilizes a drive and control system from Bosch Rexroth to neutralize the roll, pitch and heave caused by waves and considerably expands the uses for standard floating cranes.

Crane stability has historically been a major challenge for offshore installation and decommissioning work because even small waves on the sea produce major movements for the tip of the crane, endangering the crew.

“Right now, standard floating cranes encounter difficulty with waves cresting at 30 centimetres. Safe crane operation can no longer be guaranteed,” said Barge Master Director Jan-Paul van den Bos.

Working together with Rexroth, Barge Master developed a comprehensive solution including all the necessary drive and control components to compensate for movements in three degrees of freedom.

Special sensors deliver motion data to the system, which calculates how the platform must move to compensate for the action of the waves. Three degrees of freedom (heave, roll and pitch) are compensated by three hydraulic cylinders that attach the crane to the hull of the ship. By measuring the motions of the vessel, and controlling the motion of the actuators, the cylinders’ movements can compensate for the waves.

The remaining degrees of freedom (surge, sway and yaw) are compensated by dynamic positioning of the vessel or traditional mooring systems.

The launch of the Barge Master platform will allow for cranes weighing approximately 400 tons to operate in swells up to five times greater than allowed by current systems. “With Rexroth motion compensation we have expanded the application window for the floating cranes – handling waves of up to 150 centimetres,” van den Bos noted.

The Barge Master system is suitable for all kinds of standard marine vessels, significantly expanding the utility of standard cranes, and drastically reducing the manufacturing costs and operating expenses for offshore projects.

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Bosch Rexroth AG is one of the world’s leading specialists in the field of drive and control technologies. Under the Rexroth brand name, the company supplies more than 500,000 customers with tailored solutions for driving, controlling, and moving. Bosch Rexroth is a partner for Mobile Applications, Machinery Applications and Engineering, Factory Automation and Renewable Energies. The company provides customized solutions tailored to the needs and specifications of each individual market. As The Drive & Control Company, Bosch Rexroth develops, produces, and sells components and systems in over 80 countries. As part of the Bosch Group, Bosch Rexroth and its 38,400 associates generated approximately 6.4 billion euros ($8.9 billion) in revenue in 2011.

To learn more, please visit .

In the U.S., Canada and Mexico, the Bosch Group manufactures and markets automotive original equipment and aftermarket products, industrial drives and control technology, power tools, security and communication systems, packaging technology, thermotechnology, household appliances, solar energy, healthcare telemedicine and software innovations. Having established a regional presence in 1906, Bosch employs over 22,500 associates in more than 100 locations, with sales of $9.8 billion in fiscal year 2011, per preliminary figures. For more information, visit .

The Bosch Group is a leading global supplier of technology and services. According to preliminary figures, more than 300,000 associates generated sales of 51.4 billion euros ($71.5 billion) in the areas of automotive and industrial technology, consumer goods, and building technology in fiscal year 2011. The Bosch Group comprises Robert Bosch GmbH and its more than 350 subsidiaries and regional companies in some 60 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. Bosch spent more than 4 billion euros ($5.5 billion) for research and development in 2011, and applied for over 4,100 patents worldwide. With all its products and services, Bosch enhances the quality of life by providing solutions which are both innovative and beneficial. Further information is available online at and .


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