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In this study, the improvement of maneuverability of a Very Large Crude oil Carrier (VLCC) with small engine output under a condition involving 30% reduced EEDI [IMO (2012)] was performed by attaching a high lift rudder. A high lift rudder (HL rudder) with a fishtail section and end plates was newly designed to increase the rudder force under a restriction that minimizes the increase in rudder resistance...