On July 1, 1972, Detlef Hegemann took over the bankrupt Rolandwerft in Bremen- Hemelingen . Shipbuilding was not resumed until 1977 with the Rolandwerft Type 0 . Based on the type 0, the shipyard developed types 1, 2 and 3 . The type 1 was a smaller version of the type 0. The river seagoing ship type is mainly designed for the operation in the small voyage to the outer areas of various European rivers. The dimensions, such as the height of the superstructures and the back, are tailored to the special features of this insert. The client for the type ship Warfleth built in 1980 was the shipping company Dieter Blanke from Berne. The Warfleth was used for many years by the Rhein-, Maas- und See-Schiffahrtkontor in transporting steel products from the Ruhr area and North Sea ports to Great Britain.
W. Gerschau: Canal and river coasters series in shipping and technology number 8/1983, pp. 65–71
Cheetham, Chris; Heinimann, Max: Modern River Sea Traders . Modern River Sea Traders, Teignmouth 1996, ISBN 0-9516317-2-1 .
Detlefsen, Gert Uwe: From the Ewer to the container ship . The development of the German coasters. Koehlers Verlagsgesellschaft, Herford 1983, ISBN 3-7822-0321-6 .
