An item reported that the yard Conrad at Haarlem built a sea going self propelled dredger Wolga Don for the Soviet Union which was already underway. Dimensions 54 x 11,20 x 3 metres , dredging depth 12 metres with auxiliary ladder even 15 or 18 metres . The buckets with special made-teeth for dredging stones) had each a capacity of 750 litres . Her dredging capacity was 500 cubic metres in an hour. The engine and two Scottish boilers each with a heating surface of 120 square metres supplied 650 ihp with 190 rpm allowing a speed of 8 miles . Accommodation for 52 men and especially suitable for the Russian climate. Further more fitted out with a radio transmission device.