... ,Cu4 Approved by ABS,BV.CCS,GL,LR, SpecificationsUsed for marine boat propeller,ship propeller Fixed pitch propeller Material,Cu1,Cu2,Cu3 ... .ApplicationContainer vessels, tankers, bulk carriers and dry cargo vessels ,Speed boat,yacht,etc.Other InformationWe design and supply all propulsion system ... ,Tunnel thrusters,Azimuth thrusters,Water jets,also Main propulsion assembly. marine propeller blade