The Gothebork sailed on a sea that drains through which islands?
Götheborg (ship): Götheborg is a sailing replica of an 18th-century Swedish East Indiaman and one of the world's largest operational wooden sailing vessels. Götheborg (ship):  In 2008, "Götheborg" completed the first "Baltic Sea Tour". Baltic Sea:  A mediterranean sea of the Atlantic, with limited water exchange between the two bodies, the Baltic Sea drains through the Danish islands into the Kattegat by way of the straits of Øresund, the Great Belt, and the Little Belt.
Danish islands