Trunk side slope keels for sailing boats to increase stability of boat in case of adverse weather and winds placed at waterline symmetrically at bottom structure on both sides of boat

摘要

The trunk side slope keels (3) are placed on both sides symmetrically at the bottom structure of boat (8) by root joint (7) and keel root (6) and can move with operating angle 55 [deg] maximum on both sides (4) around the axis of rotation of keels. The slope keels are moved out mechanically or hydraulically maximum to the height of waterline (5).