A list dated 1 November 1905 reported that the Arnhemsche Sleephellingmaatschappij, Arnhem, Netherlands built the steel German Rhine tug Adolf Margaretha destined for Coblenz. Fitted out with a 300ihp diagonal triple engine. Displacement 155 tons and as dimensions 26,00 x 5,50 x 2,70 x 1,90 metres.
