Held by UTokyo Kashiwa Library & Kure Maritime History Science Museum
Hiraga Yuzuru Digital Archive
Approximately 40,000 records — chiefly technical materials on naval vessel planning and construction — from the papers of Hiraga Yuzuru (1878–1943), Imperial Japanese Navy Vice-Admiral of Naval Construction and 13th President of Tokyo Imperial University (1938–1943).
About
About this archive
This digital archive was created to make publicly available the technical materials — chiefly on naval-vessel planning and construction — left by the late Hiraga Yuzuru (Vice-Admiral of Naval Construction; 13th President of Tokyo Imperial University), hereafter referred to as the Hiraga Yuzuru Papers. It was prepared with the cooperation of
- Department of Ocean Technology, Policy, and Environment (former Department of Environmental and Ocean Engineering), Graduate School of Engineering, the University of Tokyo
- Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, the University of Tokyo
- Yamato Museum (Kure Maritime History Science Museum)
.
A research portal (non-public) was also developed with support from the 2007–2008 JSPS Grant-in-Aid for Exploratory Research (No. 19650252, “Public release of a digital archive of the Hiraga Yuzuru Papers, building of a research framework, and studies in the history of industrial technology”).
News
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Featured content
Tools
Features & resources
Keyword search
Full-text search across metadata (titles, card catalogue, descriptions). Bigram analysis handles Japanese variants.
Full-text OCR search (beta)
Search the per-page OCR transcripts produced by NDL OCR Lite. Jumps straight to the matching canvas. OCR is being indexed progressively.
Digital exhibition
A 41-document exhibition tracing Hiraga Yuzuru's school years (Tokyo Prefectural Middle School, First Higher School, and Tokyo Imperial University), with commentary and links to the IIIF detail viewer.
Facet refinement
Refine by category, document type, warship, extent, year, etc. Combine filters to drill in.
IIIF viewer
Detail pages embed a multi-canvas OpenSeadragon viewer; manifests open in Mirador and other viewers.
Hiraga Yuzuru chronology
Chronological summary from his 1878 birth through 1943 death, alongside related events.
About the documents
Background, archival history, related research, staff and acknowledgements.
News
Site updates, data additions, maintenance notices.
IIIF Manifest
Each item exposes a IIIF Presentation 3 manifest for use in Mirador and other viewers.










