Experience Currents Pirates Once Rode! Ōshima (Imabari, Ehime prefecture)

Did you know that pirates once operated throughout the Seto Inland Sea?

During the Sengoku Period (Warring States Period: 1467~),Murakami Suigun was the biggest, most powerful pirate clan in the area. Indeed, Portuguese missionary Luis Frois called them the “greatest pirates in Japan”.

The complex landforms and narrow straights around the Geiyo Islands create a myriad of perilous currents to which many a ship has fallen victim! For the Murakami Suigun, however, navigating this treacherous sea was apiece of cake; they mastered it like their own back yard, and it is said, took advantage of their knowledge by building the impregnable Suigun Castle on Noshima Island.



Take the tour to experience the powerful currents once traversed by pirates!

At Miyakubo Port on Ōjima, Ehime Prefecture, the “Noshima Murakami Suigun” flag welcomes you.

The tour takes you around “Noshima” where the Murakami clan built their fortress.



Noshima Island is deserted now, but some architectural features like stone walls and pillar holes remain.

Though the tour does not land, local people sometimes visit in springtime to view the gorgeous cherry blossoms.




As you get closer to Noshima, the color of the sea alters gradually.

The current quickly changes shape like a creature; one moment rising sharply, the next curling up with splash – it looks like a river of rapids within the sea. The boat splashes through with no mercy… The 40-minuteride is up in no time, but the summer heat is cleared away with this natural roller coaster.


After the tour, if you have an appetite, the Suigun restaurant serves delicious local seafood.

If you want to know more about the Suigun pirates, a visit to the museum in front of the port is perfect.


<< Current Experiencing Tour >>


– Shop/Seafood Restaurant “Noshima Suigun”-


Address: 1293-2 Miyakubo, Miyakubo-chō,Imabari-shi, Ehime

TEL: 0897-86-3323

Hours: 9:00 – 16:30

(Cut-off time is 16:00. Tour departs every hour)


¥1000 (13 years old+)

¥500 (7 to 12-years old)

Free (6 years old and under)

(Please make a reservation if your group consists of 10 or more.)



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