We, HEINRICH HARBISCH Schiffswerft GmbH in Duisburg, or short: HA-DU, are the specialists for ship repairs of all kinds, new steering systems and shaftings (incl. our own shaft seals) and HA-DU anchors (HA-DU Spezial and PowerAnker), and our HA-DU ship clutches for the river and sea zones. In the course of our more than 100 years of experience, we have lived through all the ups and downs of river and canal shipping and are proud to still “swim at the top” - all that and already in 3rd and 4th generation! more