unpaved: 242,411 km (2008)
Waterways:
1,770 km (seagoing vessels use inland seas) (2010) country comparison to the world: 47
Merchant marine:
total: 673 country comparison to the world: 16 by type: bulk carrier 152, cargo 31, carrier 3, chemical tanker 28, container 2, liquefied gas 63, passenger 12, passenger/cargo 120, petroleum tanker 152, refrigerated cargo 4, roll on/roll off 52, vehicle carrier 54
foreign-owned: 1 (Norway 1)
registered in other countries: 3,064 (Bahamas 93, Belize 1, Bermuda 2, Burma 1, Cambodia 2, Cayman Islands 19, China 2, Cyprus 19, Honduras 4, Hong Kong 84, Indonesia 7, Isle of Man 15, Liberia 102, Malaysia 4, Malta 5, Marshall Islands 41, Netherlands 1, Panama 2347, Philippines 82, Portugal 9, Saint Kitts and Nevis 3, Saint Vincent and the Grenadines 3, Sierra Leone 3, Singapore 146, South Korea 15, Thailand 2, UK 4, Vanuatu 44, unknown 4) (2010)
Ports and terminals:
Chiba, Kawasaki, Kobe, Mizushima, Moji, Nagoya, Osaka, Tokyo,
Tomakomai, Yokohama
Military ::Japan