NV Ingenieurskantoor voor Scheepsbouw
| Industry | Shipbuilding |
|---|---|
| Fate | Dissolved after the Nazi Party took power in Germany |
| Founded | 1922 |
| Defunct | 1933 |
| Headquarters | Stettin, Hamburg, Kiel and Bremen |
| Parent | AG Vulcan, Germaniawerft and AG Weser |
NV Ingenieurskantoor voor Scheepsbouw (Dutch: engineer-office for shipbuilding), usually contracted to IvS, was a Dutch dummy company set up by the Reichsmarineamt after World War I in order to maintain and develop German submarine know-how and to circumvent the limitations set by the Treaty of Versailles. The company designed several submarine types for paying countries, including the Soviet S-class submarine and the prototypes for the German Type II submarine and the German Type VII submarine.
The company was a joint venture by the German shipyards AG Vulcan and the Krupp-owned Germaniawerft in Kiel and AG Weser in Bremen. Design work was carried out at the facilities of these companies in Germany.
The company was funded by the German Navy. IvS first constructed two submarines for Spain, which were later sold to Turkey, both of which were launched in 1927 and were closely based on the Type UBIII of the Kaiserliche Marine. In 1927-1933 five IvS submarine designs were built by Crichton-Vulcan in Finland. One of them was CV 707, later Vesikko, which was the prototype of type IIA. The contracts were worded in such a way that IvS personnel were involved with crew training and selection, and were allowed to take part in boat service trials. The Germans — who were, at the time, tightly restricted from using their submarines for themselves — thus gained a first-hand knowledge of how their new prototypes worked in practice.
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