When Winter War broke out in 1939, Turku was heavily bombed by the Soviet air forces, but Crichton-Vulcan avoided of large damages. When the peace came in 1940, Finland signed a new trading agreement with Soviet Union and soon Staffans and the Soviet Machinoimport signed a contract of four tug boats; this was followed by another order of 12 more slightly larger vessels of the same kind. No single vessel could be delivered before Finland was again in war with Soviet Union in summer 1941. However, Staffans found a new customer: he agreed delivering of the ships to German Kriegsmarine instead, and the yard got even few more orders for similar ships from Germany. In addition, Staffans signed contracts for cargo ships for Germany. Total 38 vessels were handed over to Germany before Finland got at war with Germany in September 1944. The yard suffered some damages in the Continual War.