 During this time, a preliminary plan was drawn up without foreign assistance; completed on 11 July 1939, it was missing many of the post-First World War advances in warship technology.In particular, the armor protection was completely outmoded.Germany and the Netherlands were eventually able to reach an agreement where Germany would release plans and drawings based upon their ideas for a battlecruiser, in return for a guarantee that all needed equipment would be ordered from German firms.