Local sea routes connected 78 home seaports (38 open to foreign trade). Yokohama, Kobe and Osaka had the greatest importance for trading with Japan. These ports had the third, fourth and eighth place in net tonnage registered in the world. Coal passed from Moji to Osaka and Yokohama. Karafuto timber represented a third part of local trade. Soy bean products from Dairen and Ryojun arrived at Yokohama. The sugar cane of the South Seas Mandate and Formosa, cotton, salt and minerals represented other important parts of these transport transactions. In 1926 Toyo Kisen Line (TKK), with its fleet of nine ships, merged with NYK. The current funnel livery was introduced in 1929. The company also ran services connecting metropolitan Japan to its exterior provinces (Chosen, Karafuto, Kwantung, Formosa and South Mandate) of the Empire.