4 · Society, Civilization, Culture
46 · social and economic life, transport and communication
46C · traffic and transport
46C2 · traffic on the water
46C28 · navigation and manoeuvering ~ ship
46C28(+6) · navigation and manoeuvering ~ ship (+ departure and arrival ~ traffic and transport)
46C28(+63) · navigation and manoeuvering ~ ship (+ under way, at sea (~ travelling))