Two caisson style wharves, no.4 and no.5 have been constructed at a cost of US $ 4 million to handle 10,000-ton vessels by lighter and 5,000-ton ships at the dockside.
要興建一座現代化的商港，工程人員除了必須具備專業化的施工技術和豐富的經驗外，還須配備許多複雜精密的器械和工具。