CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

SS Bokuyo Maru

Ship built in 1924

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionFeb 16, 2026
Entity authorityQ137706604 ↗
Source-derived summary

Bokuyo Maru (墨洋丸) was a cargo and ocean liner, built in 1924 at the Tsurumi Naval Yard and registered to Tokyo.

The ship traveled between Japan and the west coast of South America; she transported the ancestors of Alberto Fujimori.

Initially she was operated by Toyo Kisen Kaisha. In March 1926, that company merged into Nippon Yusen Kaisha (NYK Line), and NYK acquired the ship.

On June 28, 1939, the ship experienced a fire from copper concentrate while in Los Angeles. The fire incident ended on July 2.

Sinking

On July 18, 1939, the ship was on a voyage from Valparaíso, Chile, through Central America and then the San Pedro area of Los Angeles to Yokohama, with a planned arrival on July 22. The ship left Los Angeles on July 2, with S. Amano being the ship's captain.

Nitrates had been put on the ship in Valparaiso. While the ship was 1,125 miles (1,811 km) east of her destination, the nitrates ignited.

Editorial summary

This brief starts where responsible research should: with the source description of “SS Bokuyo Maru” as ship built in 1924. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1924, 1926, 1939—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Bokuyo, Maru and Ship can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as ship built in 1924. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Feb 16, 2026. The linked authority identifier is Q137706604. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1924, 1926 and 1939.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “SS Bokuyo Maru”, its source revision and the description used here.
  2. Expand the search: follow SS Bokuyo Maru primary sources, SS Bokuyo Maru archive and Bokuyo research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “SS Bokuyo Maru”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “SS Bokuyo Maru” 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.