11000-23000吨，2011年份后。支持以下认证之一即可：ABS American Bureau of Shipping
BV Bureau Veritas
CCS China Classification Society
DNV GL Det Norske Veritas Germanischer Lloyd
KR Korean Register of Shipping
LR Lloyd's Register
NK Nippon Kaiji Kyoka
RINA Registro Italiano Navale
RS Russian Maritime Register of Shipping
Polski Rejester of Shipping
IRS Indian Register of Shipping
CRS Croation Register of Shipping
