關於「Ice class 1A」標籤，搜尋引擎有相關的訊息討論：

IMO Polar Code services - DNVwww.dnv.com › maritime › polar › servicesFinnish ice class rules' engine output requirement for existing ... - DNVwww.dnv.com › news › finnish-ice-class-rules-engine-outp...[PDF] Classification Society Ice Classwww.bsis-ice.de › material › table_ice