Trawlers are boats designed for high seas fishing. These boats are characterized by solid hulls and powerful engines. Some of them also serve the function of the processing and freezing vessel. Fishing vessels known as trawlers carry on board trawls, i.e. special bag-shaped nets that capture bottom fish. Red, green and navy blue trawlers, which are moored in the port of Kołobrzeg, were built in the 1990s. They can be seen most often on the Drzewny Canal (literally: Tree Canal) situated in Szyprów Street (English: Skippers Street).