The King did not forget to ensure a safe base for the newly created fleet. The Harbor in Puck was too shallow for the biggest ships and the usage of Wisłoujście (a fortress near Gdansk) was constantly plagued by difficulties from the Danzig Patricians (afraid that a king with a strong naval arm would step upon their "liberties", control tolls, exert taxes etc.). The royal engineers Friederich Getkant (Fryderyk Getkant), Jan Pleitner and Eliasz Arciszewski selected a location for two new fortifications with naval bases on the Hel peninsula. They were quite impressive and raised in record time (finished in 1634, consisting of strong wooden (oak) palisades, earthen walls, trenches and moats). These fortifications were named after the King and his brother: Władysławowo and Kazimierzowo (the small town of Władysławowo still exists on the Hel peninsula nowadays - the fort was more or less on its current edge).