Sledge Hammer Engineering International B.V. (Sledge Hammer in short) is a high quality specialist in fabrication of special custom made heavy duty steel structures for the off-shore Industry, mob- and demobilizations of off-shore barges, fabrication and installation of sea-fastenings, piping, conversions and repairs. Sledge Hammer has its own Quayside at Waalhaven Rotterdam with a Guaranteed Water depth of 10,6 meters. Therefore larger sea-going vessels and barges are able to moor alongside our quay. All works are executed in accordance with ISO 9001:2008, SCC** 2008/5.1 and ISO 14001:2004 certification. For more information on for example performed projects please visit our website: www.sledgehammer.nl.