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No.1-class auxiliary minesweeper

class of minesweepers of the Imperial Japanese Navy (IJN)

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJan 7, 2026
Entity authorityQ7042813 ↗
Source-derived summary

The No.1 class auxiliary minesweeper (第一号型掃海特務艇,, Dai Ichi Gō-gata Sōkai-Tokumutei) was a class of minesweepers of the Imperial Japanese Navy (IJN), serving during World War II. 22 vessels were planned and built in 1941–43 under the Maru Rin Programme (Ship # 251–256) and the Maru Kyū Programme (Ship # 480–495).

Background

In 1938, the IJN was troubled by drifting contact mines from the National Revolutionary Army at Yangtze River. The IJN dispatched a lot of minesweepers and paravane equipment vessels (minelayers, torpedo boats and more) to Yangtze River, but they were damaged by a drifting contact mines too.

The IJN wanted a small and light-footed minesweepers. The IJN already commandeered a lot of fishing boats and gave minesweeping operations to them. The Kampon designed minesweeper similar to the trawlers. It is No.1-class auxiliary minesweeper (Project Number I5).

They have begun to be commissioned from 1942. However, all of them was dispatched to Pacific front, and they were no match for the magnetic mine because their hull was made by steel.

Ships in class

Photos

Notes

Bibliography

"Rekishi Gunzō"., History of Pacific War Vol.51 The truth histories of the Japanese Naval Vessels Part-2, Gakken (Japan), August 2005, ISBN 4-05-604083-4.

Editorial summary

Begin with the source’s own compact description: “No.1-class auxiliary minesweeper” is class of minesweepers of the Imperial Japanese Navy (IJN). The dossier treats that line as a proposition to test through 1-class, auxiliary and minesweeper, not as a finished interpretation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1941, 1938, 1942, 2005—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, 1-class, auxiliary and minesweeper is the immediate research focus.
Editorial analysis

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Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jan 7, 2026. The linked authority identifier is Q7042813. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1941, 1938, 1942 and 2005.

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Source & attribution

This entry incorporates text from “No.1-class auxiliary minesweeper” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.