Japan
Sumiwaka Kaiun K. K. was founded in 1918 and has since established itself as a leading provider of seaport services in Japan. The company operates a total of 15 owned ships and three charter ships, representing a fleet of 18 vessels (as of 2026). Sumiwaka Kaiun K. transports approximately 100,000 tons of goods annually and 7 million tons of marine soil materials such as sand, distributing them across multiple locations in Japan, from Hokkaido to Okinawa. Known for its comprehensive services in the seaport business, the company offers a wide range of ship types, including ships for transporting and processing marine soil materials. Sumiwaka Kaiun K. is certified to the standards of the Japanese Transportation and Logistics Industry and collaborates with various brands and manufacturers to ensure the quality and efficiency of its ships.
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