Nevertheless, except for the standard mode of transhipment (shipping to Hong Kong, unloading goods, going through customs, final processing, then loading goods on a different ship bound for the mainland), once a boat enters the high seas, its course is completely open, far more difficult to regulate than an airplane, with its cargo divided according to one seat per passenger.
不過除了正規的轉口貿易（貨到香港後卸貨下船、入關、經過處理後再換一艘船轉往大陸）外，船入大海，其實花樣百出，遠比一人一機位的空運更難以管制。