The structural form of the stern is the main classification criterion for traditional boats
Liberty boats in general
A common traditional boat type in Greece, liberty boats have high stern curvature with an obtuse angle penetrating the rudder shaft from the inside of the boat.
This design represents a half-model fishing liberty (anemotrata) from Perama in scale 1:50 after Damianidis, K. (1998). Greek Vernacular Boatbuilding. Piraeus Bank Cultural Foundation, Fig.76, page 72.
Damianidis, K. (1998). Greek Vernacular Boatbuilding. Piraeus Bank Cultural Foundation (in Greek)