Naval Battle of Hakodate Bay

Naval Battle of Hakodate
Part of Boshin War
The naval battle of Hakodate Bay, May 1869; in the foreground, Kasuga and Kōtetsu of the Imperial Japanese Navy
Date 4 May – 10 May 1869 Location Hakodate Bay Result Decisive Imperial victory
Belligerents
Empire of Japan: Kōtetsu Kasuga Hiryū Teibō Yōshun Mōshun Chōyō	Republic of Ezo: Kaiten Banryū Chiyodagata Chōgei Mikaho
Commanders and leaders
Masuda Toranosuke	Arai Ikunosuke
Strength
8 steam warships	5 steam warships
Casualties and losses
1 ship sunk	2 ships sunk, 3 captured

 Empire of Japan:

 Republic of Ezo:

The Naval Battle of Hakodate (函館湾海戦, Hakodatewan Kaisen^?) was fought from 4 to 10 May 1869, between the remnants of the Tokugawa shogunate navy, consolidated into the armed forces of the rebel Ezo Republic, and the newly formed Imperial Japanese Navy. It was one of the last stages of Battle of Hakodate during the Boshin War, and occurred near Hakodate in the northern Japanese island of Hokkaidō.

The naval forces of the Ezo Republic were grouped around the warship Kaiten. The fleet originally consisted of eight steamships: Kaiten, Banryū, Japanese gunboat Chiyoda,Chōgei, Kaiyō Maru, Kanrin Maru, Mikaho and Shinsoku.

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