Naval Battle of Hakodate Bay

Naval Battle of Hakodate Bay
Naval Battle of Hakodate Bay
Part of Boshin War
Naval battle of Hakodate
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:
Commanders and leaders
Arai Ikunosuke
Strength
8 steam warships 5 steam warships
Casualties and losses
1 ship sunk 2 ships sunk, 3 captured

The Naval Battle of Hakodate Bay (函館湾海戦 Hakodatewan Kaisen?) was fought from 4–10 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.

Contents

Ezo Republic forces

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[1], Chōgei, Kaiyō Maru, Kanrin Maru, Mikaho and Shinsoku.

However, Kaiyō Maru and Shinsoku had been lost in a previous engagement in front of Esashi, and Kanrin Maru had been captured by Imperial forces after suffering damage in bad weather. The loss of these two major units seriously weakened the Ezo Republic side.

Imperial forces

For the operation, an Imperial Japanese Navy fleet had been rapidly constituted around recent acquired ironclad warship Kōtetsu, which had been purchased from the United States. Other Imperial ships were Kasuga, Saga, Chōshū and Satsuma to the newly formed Meiji government in 1868.

The nascent Imperial government started with a much weaker navy than that of the Ezo Republic, both in terms of vessel strength, unity (most of its ships were borrowed from Western domains), and training. However the loss of two major units on the Ezo side previous to the main action (Kaiyō Maru and Kanrin Maru), and most of all, the incorporation of the revolutionary Kōtetsu since April 1868 on the Imperial side (a ship originally ordered by the Tokugawa shogunate, but withheld by the United States during the main conflict (under a policy of neutrality taken by foreign nations), and finally delivered to the newly formed government), turned the tables. In addition, the Imperial government received the support of two transportation ships chartered by the United States for the transportation of its troops.

Combat

Sinking of Chōyō by the rebel Banryū

The Imperial fleet supported the deployment of troops on the island of Hokkaidō, destroyed onshore fortifications and attacked the rebel ships. On 4 May Chiyodagata was captured by Imperial forces after having been abandoned in a grounding and on 7 May Kaiten was heavily hit and put out of action. Banryū managed to sink the Imperial forces' Chōyō, but Banryū later sank in turn because of heavy damage.

The Imperial Japanese Navy won the engagement, ultimately leading to the surrender of the Republic of Ezo at the end of May 1869.

A Japanese rendition of the land and naval battle of Hakodate

Ships of foreign navies — the British HMS Pearl and the French Jules Brunet who had trained the rebels and helped organize their defenses, surrendered on Coetlogon on 1869-06-08.

The future Admiral of the fleet Heihachiro Togo participated in the battle on the Imperial side as a young third-class officer, onboard Kasuga.

References

  1. ^ Jentschura p. 113
  • Ballard C.B., Vice-Admiral G.A. The Influence of the Sea on the Political History of Japan. London: John Murray, 1921.
  • Jentschura, Hansgeorg; Dieter Jung, Peter Mickel. Warships of the Imperial Japanese Navy, 1869-1945. United States Naval Institute, Annapolis, Maryland, USA; 1977. ISBN 0-87021-893-.
  • Onodera Eikō, Boshin Nanboku Senso to Tohoku Seiken. Sendai: Kita no Sha, 2004.

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