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