After Denmark lost Tallinn to the Germans, Tallinn became a Hansa city. At the same time, the Hansa was becoming a significant player in the Baltic sea traffic. The Hansa used sailing routes which had been known for centuries. The larger and heavier Hansa merchant ships, however, could no longer be pulled across isthmuses of land, as was customary with ships before. Instead, these ships had to sail along waterways.
This was a key reason why the haven of the Hanko Peninsula gradually moved from Kappelisatama to the peninsula’s southern tip. There, south of Skansholm, lay two islands Gambla Tullen and Kobben between which was the bay of Hauensuoli (Gäddtarmen) , an ideal haven for the cog ships of the Hansa. As centuries have passed, the beach cliffs of this bay have become the guestbook of the Hanko peninsula. To pass time, the sailors who were sheltering from the weather often hacked their names and coat of arms on the beach cliffs.