"A Haffboot (plural: Haffboote) is the collective term for a type of sailing boat that is used as a fishing or cargo boat on the shallow Baltic Sea coast, in the Bay of Greifswald, the Stettin Lagoon and their neighbouring waterbodies until the 20th century. Using similar or identical designs for the ship´s hull and its cargo hold, the fishing boats were built with wet or dry cargo holds. The flushed cargo hold, often called a Bünn in the Baltic Sea region, is not sealed hermetically from the water, but is filled with surrounding water. Small holes in the outer skin of the boat enable an exchange of water between the bünn and the outside water. The fish that are caught can thus be transported live. In a traditional fishing boat without cooling units, this allowed the time delay between catching the fish and landing them to be extended." - (en.wikipedia.org 30.01.2021)
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