Lieutenant Grudziński intended to seize the maps of a German vessel, as all of the navigational aids of "Orzeł" except for a guide of Swedish lighthouses, had been confiscated. No German merchantmen were ever spotted, however. After three weeks of searching, it was decided to leave the Baltic and head for Britain. It took two days to pass through the heavily guarded entrance. The only references that the Poles had were the lighthouse guide and a rudimentary map drawn by the navigation officer.