Used for marine boat propeller,ship propeller Fixed pitch propeller Material, ... Approved by ABS,BV.CCS,GL,LR, SpecificationsUsed for marine boat propeller,ship propeller Fixed pitch propeller Material,Cu1,Cu2 ... ,meterial available Cu1,Cu2,Cu3,Cu4,Stainless steel.Our products has been approved by ABS,BV.CCS,DNV,GL. ... ,Azimuth thrusters,Water jets,also Main propulsion assembly. marine propeller blade