1) Sea lane 
The literally northern-bound ships was a shipping route (and also the ships involved) in Japan from the Edo to the Meiji periods. The route went from Osaka through the Seto Inland Sea and the Kanmon Straits to ports in Hokuriku on the Sea of Japan and later to Hokkaidō. The Kaga Domain, which sold approximately 70,000 koku of rice every year in O...