Air cavity vessel

摘要

An air cavity vessel which forms an air cavity over the bottom (101) thereof to reduce frictional resistance to water includes: a transverse compartment member (120) extending in a widthwise direction on the bottom of the air cavity vessel; an operating unit vertically operating the transverse compartment members; and a hinge unit (121) positioned at a stem-side end of the transverse compartment member and turnably supporting the transverse compartment member within a predetermined angle.