Definition and status of OOG OOG,known as Out Of Gauge,mainly refers to opentop and flatrack container loading oversized cargo.OOG is known well among shipping lines,but is hardly known to freight forwarders.As large machinery and equipment import and export increase,OOG plays an important role in large machinery and equipment transportation,and comes into international ocean freight’s sight.All shipping lines have now organized resource to transport OOG,and in every port,there are a number of freight forwarders providing OOG(especially open top and flatrack) service.Yifan got involved in OOG transportation in Shenzhen a decade ago,and knows well about the resource scarcity and handling complexity of OOG.Due to imperfection and irregularities in OOG market,it’s significant for customers to carefully choose experienced and resourced freight forwarders to avoid risk and lost.