種差丸 (Tanesashi Maru)
Otto Petersen Elementary School (Oregon, US), Tanesashi Elementary School (Japan) & Columbia River Maritime Museum
Updates:
1st Voyage
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About the boat and participants

Hull #005 was built by the students of Otto Petersen Elementary School in Scappoose, Oregon and was named 種差丸 (M/B Tanesashi Maru) by the students of Tanesashi Elementary School in Hachinohe, Japan. She is part of the Transoceanic Classroom developed by Educational Passages and the Columbia River Maritime Museums miniboat Program.The Oregon students placed letters and locally significant gifts in the cargo hold for the Japanese students to open upon its arrival in Hachinohe. The students in Japan will place letters for their new American friends in the cargo hold to be opened on arrival onshore in North America.
The Columbia River Maritime Museum would like to thank:
- Consular Office of Japan in Portland, Oregon
- Mr. Kimura, Hachinohe Board of Education
- Ms. Ogawa, NHK World
- Mrs. Kasuga, City of Hachinohe
- Mr. Nakamura, Ookuki Branch of Minamihama Fishermen Cooperative
- Columbia River Maritime Museum Mini-Boat Program Sponsors
- Educational Passages
- The City of Hachinohe, Aomori, Japan
- Awaji Hiroshi- Tanesashi Elementary School
- Minoru Suzuki, Principal of Tanesashi Elementary
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December 18, 2017 – Delivering the boats across the Pacific

The Columbia River Maritime Museum’s Education Director delivered the East Ocean Friends to Tanesashi Elementary School. The Japanese students opened the cargo hold to find gifts of salt water taffy from the students of Hilda Otto Petersen Elementary School. The students Tanesashi then got to work decorating their side of the sail and epoxying the name on the transom.
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December 19, 2017 – Launching Ceremony
All the participating Mini-Boat schools in Hachinohe, Japan gathered at Okuki Elementary for a very special launching ceremony attended by government officials, members of the community, and national and international press. -
December 20, 2017 – Launch Day
Launch day, December 20, 2017. She was placed in the water by Mr. Nakamura’s (head of Okuki Branch of Minamihama Fishermen Cooperative) crew 20km into the Pacific Ocean where the offshore currents converge. Unfortunately, very quickly after launching she lost her keel and a large wave knocked her over. After three passes Mr. Nakamura’s crew was able to get her back onboard.
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January 10, 2018 - New keel and ready for redeployment
Her new keel has been attached and the Tanesashi Maru is currently waiting for a second and successful deployment.The story on international news is at:
https://www3.nhk.or.jp/nhkworld/en/news/videos/20180126122726093/
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January 19, 2018 - Launched in the Pacific
The Tanesashi Maru was launched overnight and is now sailing in the Pacific towards North America!
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January 22, 2018 - Quiet after 3 days at sea
We last heard from the Tanesashi Maru on January 22. Hopefully she is still sailing out there!
Columbia River Maritime Museum’s Miniboat Program celebrates 10 years! Over this first decade, the program has provided a global, multidisciplinary STEAM learning experience for 4th through 7th grade classes. Students work in teams to design, assemble, launch, and track GPS-equipped boats. Each classroom learns about maritime history and culture of the Pacific Northwest and across the Pacific Ocean. In 2027, we will also plan to launch our 50th miniboat!
The program is in partnership with Educational Passages and has been supported by numerous organizations and private donors, including Consular Office of Japan in Portland, Pacific Power, NWSTEM Hub, West Marine BlueFuture Fund®, Northwest Oregon Works, and U.S. Coast Guard.

