NV Ingenieurskantoor voor Scheepsbouw

The Ingenieurskantoor voor Scheepsbouw (short IvS ), was founded after the First World War in July 1922 at Kneuterdijk in The Hague Dutch front organization of the German Imperial Navy, to obtain for the purpose of the German knowledge of submarine construction and further develop and to circumvent the restrictions of the Versailles Treaty.

The company was financed by the German Navy and was a joint venture of the shipyards Vulcan -Werke Hamburg and Stettin Actiengesellschaft, F. Krupp Germania Werft in Kiel and the joint-stock company " Weser " in Bremen. Design work was carried out in the facilities of these companies in Germany.

The firm designed several U-boat types for other countries, including the Soviet S-Class ( Stalinez class) as the submarine S-13 and the prototypes of the German U- boat class II and class submarine VII the first submarines were built for Spain and later sold to Turkey. 1927-1933 built the IvS five submarines for Finland. The CV 707, the later Vesikko, was the prototype of the German U - boats of the class IIA.

In the training, the selection of the crew and German during test runs were involved and so gained operating experience with the new submarines firsthand. After the seizure of power in 1933 was dissolved Ingenieurskantoor voor Scheepsbouw and the Imperial Navy began to build its own submarine fleet; the training of the crews was taken in Kiel.