The Aquapoise 55 is considered the Industry Standard for medium speed inboard cruisers and it is designed for applications where smoothness and performance are essential. The blade design gives less slip than the old-fashioned round blade or turbine propeller. With a DAR of 55% it can be used on displacement craft when the power is considered too high for the Aquapoise 45. The 55 can be manufactured from either High Tensile Manganese Bronze or Nickel Aluminium Bronze.