A propeller for a marine craft drive comprising a plurality of blades wherein each blade is securably attached to a central propeller hub, the propeller comprising: a blade having: a blade root securably attached to the propeller hub; a blade tip distal to the blade root; two major and opposing surfaces (36, 38): a blade back and a blade face wherein the blade face is subjected to a higher pressure from a fluid than the blade back while moving forward; a tapered leading edge and an opposing trailing edge; characterized in that the propeller further comprising: a trailing edge step feature on the blade face; a step feature on the blade face having at least one region of increasing slope when traversing the blade surface from the leading edge to the trailing edge whereby a fluid pressure peak is created substantially near the zone of increasing slope during a rotation of the blade in the fluid, wherein the step feature is located between about twenty percent and eighty percent of a blade chord length and wherein the step feature is configured such that as rotations per minute of the propeller increase, the blade face between the step feature and the trailing edge enters into a ventilated cavity, thus reducing an effective blade working area. a blade having: a blade root securably attached to the propeller hub; a blade tip distal to the blade root; two major and opposing surfaces (36, 38): a blade back and a blade face wherein the blade face is subjected to a higher pressure from a fluid than the blade back while moving forward; a tapered leading edge and an opposing trailing edge; characterized in that the propeller further comprising: a trailing edge step feature on the blade face; a step feature on the blade face having at least one region of increasing slope when traversing the blade surface from the leading edge to the trailing edge whereby a fluid pressure peak is created substantially near the zone of increasing slope during a rotation of the blade in the fluid, wherein the step feature is located between about twenty percent and eighty percent of a blade chord length and wherein the step feature is configured such that as rotations per minute of the propeller increase, the blade face between the step feature and the trailing edge enters into a ventilated cavity, thus reducing an effective blade working area. a blade root securably attached to the propeller hub; a blade tip distal to the blade root; two major and opposing surfaces (36, 38): a blade back and a blade face wherein the blade face is subjected to a higher pressure from a fluid than the blade back while moving forward; a tapered leading edge and an opposing trailing edge; characterized in that the propeller further comprising: a trailing edge step feature on the blade face; a step feature on the blade face having at least one region of increasing slope when traversing the blade surface from the leading edge to the trailing edge whereby a fluid pressure peak is created substantially near the zone of increasing slope during a rotation of the blade in the fluid, wherein the step feature is located between about twenty percent and eighty percent of a blade chord length and wherein the step feature is configured such that as rotations per minute of the propeller increase, the blade face between the step feature and the trailing edge enters into a ventilated cavity, thus reducing an effective blade working area. a trailing edge step feature on the blade face; a step feature on the blade face having at least one region of increasing slope when traversing the blade surface from the leading edge to the trailing edge whereby a fluid pressure peak is created substantially near the zone of increasing slope during a rotation of the blade in the fluid, wherein the step feature is located between about twenty percent and eighty percent of a blade chord length and wherein the step feature is configured such that as rotations per minute of the propeller increase, the blade face between the step feature and the trailing edge enters into a ventilated cavity, thus reducing an effective blade working area.