Because of the final of the Tall Ships’ Races 2007 in Szczecin one of the gates to Drobnica Port Szczecin was widely opened and I was able to legally get inside. Drobnica Port is connected with Gryfia Shipyard, and then you can get to Szczecin part of Szczecin-ÅšwinoujÅ›cie Port from which you can go without much trouble to Ostrów Grabowski. Here is google map (with photos) of the trip and here is the gallery itself.