Secret weapon’: dedicated on site steel construction and machining facility. The skyline of the Amsterdam harbours has been visibly altered in the neighbourhood of Shipdock, Amsterdam’s premier ship repair and conversion yard. The company has recently secured four major contracts for the upgrading and maintenance of the jack-up vessels GMS Endurance, GMS Endeavour, Seajack Leviathan and Seajack Zaratan. These vessels, equipped with elevating legs of over 100m in height, will be keeping the shipyard busy throughout the summer months.