The HYDRAPOISE 3.55 is considered the « industry standard» for medium speed boat inboard cruisers and it is designed for applications where smoothness and performance are essential. With a disc area ratio of 55%, it can be used on displacement craft when the power is considered too high for the HYDRAPOISE 3.45.
The HYDRAPOISE 3.55 can be manufactured from either high tensile manganese bronze or nickel aluminium bronze.
