World Library  
Flag as Inappropriate
Email this Article

Shin'yō-class suicide motorboat

Article Id: WHEBN0004045770
Reproduction Date:

Title: Shin'yō-class suicide motorboat  
Author: World Heritage Encyclopedia
Language: English
Subject: World War II suicide weapons of Japan, Boat types, Taiyō-class escort carrier, Unryū-class aircraft carrier, Japanese aircraft carrier Kaiyō
Publisher: World Heritage Encyclopedia

Shin'yō-class suicide motorboat

Japanese Shin'yō suicide motorboat, 1945
A Shin'yō under way, being tested by Lt Col James F. Doyle USA commanding officer 2nd Bn. 305th Inf. 77th Div.

The Shin'yō (震洋, "Sea Quake") were Japanese suicide motorboats developed during World War II. They were part of the wider Japanese Special Attack Units program.


  • History 1
  • Characteristics 2
  • Operational results 3
  • Gallery 4
  • References 5
  • External links 6


Towards the end of 1943, in response to unfavorable progress in the war, the Japanese command heard suggestions for various suicide craft. These suggestions were initially rejected but later deemed necessary.[1] For the naval department this meant kamikaze planes, kaiten submarines, fukuryu suicide divers or human mines and shinyo suicide boats.


These fast motorboats were driven by one man, to speeds of around 30 knots. They were typically equipped with a bow-mounted charge of up to 700 pounds of explosives that could be detonated by either impact or from a manual switch in the driver's area. These attack boats also carried two anti-ship rockets mounted on launchers located on either side of the boat behind the driver.

The similar Maru-ni, which were used by the Imperial Japanese Army, were equipped with two depth charges, and were not actually suicide boats, as the idea was to drop the depth charges and then turn around before the explosion took place. Although the chances of boat and crew surviving the wave from the explosion might seem slim, a small number of crewmen successfully escaped.[2] The depth charges used were known as the Experimental Manufacture Use 120 kg Depth Charge, and were armed by a delayed-action pull igniter.

Approximately 6,200 Shin'yō were produced for the Imperial Japanese Navy and 3,000 Maru-ni for the Imperial Japanese Army.[3] Around 400 boats were transported to Okinawa and Formosa, and the rest were stored on the coast of Japan for the ultimate defense against the expected invasion of the Home islands. The main operative use took place during the Philippines Campaign (1944–45).

Operational results



  1. ^ Japanese suicide craft. US Navy. 1946. 
  2. ^ Morison, Samuel Eliot (1959). History of United States Naval Operations in World War II: The Liberation of the Philippines. University of Illinois Press. pp. 138–140.  
  3. ^ Japanese Suicide Weapons

External links

  • Japanese Suicide Weapons
  • Explosive Motorboats based at Okinawa 1944-1945
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.