The Concordia Group recently delivered and commissioned an innovative heavy cargo “roll on/roll off ” vessel to Siemens, designed for the efficient transportation of wind-turbines parts. The Rotra Vente is 141 m long and 20 m wide, with a specially developed bow and the extendable ramp. Both the bow as the ramp are controlled by hydraulic systems.
The vessel’s “roll on/roll off ” feature makes it possible to drive cargo to and from a deck. For Siemens, it provides a way of loading and unloading equipment that’s easier and more cost effective. Siemens will use the Rotra Vente mainly in the North Sea area for the transportation of mast, nacelles (engine rooms), and rotor blades for offshore wind turbines.
A detachable roof protects the precious cargo on the vessel from sea water and weather conditions.
The Concordia Group designed the ship in 10 months’ time. The base was an existing hull of a container ship, which was skillfully transformed into a heavy cargo vessel with ramp. The heavy cargo deck has a fully autonomous ballast and the vessel was designed to achieve maximum fuel efficiency.
The vessel was converted in Werkendam and Hardinxveld-Giessendam. The main contractor, Holland Shipyards, was assisted by many companies from Werkendam and the surrounding area. A second vessel, the Rotra Mare, is expected to be complete in the first quarter of 2017.
Filed Under: News, Offshore wind, Projects