With the development of the roller energy chain more than 10 years ago, igus® has successfully designed a safe solution for the transmission of energy and data for cranes. Since then, energy chain systems have been proving their abilities in even the toughest of crane applications the world over. Since 2006, the numbers of large shipyard cranes being equipped with energy chains from igus® has run into double figures. In June 2008, the 375th ship-to-shore crane was equipped with an igus® energy chain®. So far, in the field of RTGs and RMGs the company has now equipped more than 2,500 cranes world-wide.