... propeller Marine Propeller ABS, BV, CCS, DNV, GL, KR, LR, NK, RINA, PRS, RS, IRS Material: Bronze, Aluminum Bronze, Nickel Aluminum ... been approved by ABS, BV, CCS, DNV, GL, KR, LR, NK, RINA, PRS, RS, IRS and etc., and we're working ... design. Marine Propeller ABS, BV, CCS, DNV, GL, KR, LR, NK, RINA, PRS, RS, IRS