英语翻译With a flat keel construction three is little resistance

英语翻译
With a flat keel construction three is little resistance to rolling of the ship.A bilge keel is fitted along the bilge radius either side of the ship to damp any tendency the ship has to roll.Some improvement in longitudinal strength at the bilge radius is also provided.The bilge keel must be arranged to penetrate the boundary layer of water along the bull but not too deep to have large forces acting on it.