Rudder for ships

A ship comprising a rudder comprising a rudder blade (100) having a leading edge (11, 21) and a trailing edge, wherein the rudder blade (100) has two superimposed rudder blade sections (10, 20), the leading edge sections (11, 21) and/or the trailing edge sections (30a, 30b) being offset such that the one leading edge section (11) and/or the one trailing edge section (30a) is offset port or starboard and the other leading edge section (21) and/or the other trailing edge section (30b) is offset starboard or port, and wherein the one leading edge section (11) and/or the one trailing edge section (30a) has a port-sided offset surface (18) which projects over the other leading edge section (21) and/or the other trailing edge section (30b) and the other leading edge section (21) and/or the other trailing edge section (30b) has a starboard-sided offset surface (18) which projects over the one leading edge section (11) and/or the one trailing edge section (30a), further comprising a flow body (41), which covers the offset surfaces (18) and which is configured, with respect to its dimensions, so as to be adapted to the dimensions of the offset surfaces (18), the flow body being provided in an area of each offset surface (18).