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Japanese ironclad Ryūjō

Japanese ironclad

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionDec 10, 2025
Entity authorityQ600167 ↗
Source-derived summary

Ryūjō (龍驤, Prancing Dragon), was a British-built ironclad corvette of the Imperial Japanese Navy (IJN). She was purchased on behalf of a Japanese daimyo or clan lord in 1870 who donated the ship to the fledgling IJN shortly after receiving the ship. As the largest ship in the IJN Ryūjō was frequently visited by the Emperor Meiji and was used to escort a diplomatic mission to Imperial China. She played minor roles in suppressing several of the rebellions that plagued Japan in the 1870s.

The ship ran aground in 1877 and was not refloated for almost six months. Ryūjō became a training ship after repairs were completed in 1880 and made several long training cruises throughout the Pacific Basin during the 1880s. Her second cruise in 1882–1883 was interrupted when nearly half the crew developed beriberi. A Japanese naval physician, Takaki Kanehiro, had developed a theory that the disease was caused by a dietary deficiency and was able to persuade the government to repeat the voyage with a different ship using a more nutritious diet. The only cases of beriberi that developed on that cruise were by sailors who did not eat the new diet, confirming the theory.

Ryūjō was converted into a stationary training ship when her propulsion machinery was removed in 1887–1888 and was assigned to the naval gunnery school in 1890.

Editorial summary

Begin with the source’s own compact description: “Japanese ironclad Ryūjō” is japanese ironclad. The dossier treats that line as a proposition to test through Japanese, ironclad and Ryūjō, not as a finished interpretation.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1870, 1877, 1880, 1882—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Japanese, ironclad and Ryūjō is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “japanese ironclad” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Dec 10, 2025. The linked authority identifier is Q600167. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1870, 1877, 1880 and 1882.

Critical limits

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Source & attribution

This entry incorporates text from “Japanese ironclad Ryūjō” 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.