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[Letter addressed to Hiraga (from Vice Admiral Ushimaru)]

AI summary (β): This material is a letter (fragment) addressed by Vice Admiral Ushimaru to Vice Admiral Hiraga, Naval Constructor. It includes a notation of the Technical Research Institute and appears to list and inquire about matters concerning the duty station and residence, the area of the ventilation duct for the commercial/clerical office, and the “closing of the kanzoku” at Maizuru, among others. The main persons and organizations are Vice Admiral Ushimaru, Vice Admiral Hiraga, Naval Constructor, and the Technical Research Institute; Maizuru appears as a place name. The date and publication information are unknown. Keywords: Vice Admiral Hiraga, Naval Constructor; Vice Admiral Ushimaru; Technical Research Institute; Maizuru; duty station; residence; ventilation duct; commercial/clerical office; Kongō classAuto-generated by Azure OpenAI gpt-5.5 from OCR text (which may contain errors) and image captions.
Item ID: bc809b71-5ba0-4eea-ad2a-0afb03a1df26
Catalogue ID: 20190601
Card catalogue: "Third Plan, 78,000 H.P. General Arrangement Plan of Engine Room," etc.
Doc type: 平賀宛書翰(牛丸中将より)
Category: 主力艦:金剛型
Extent: 1 sheet in pencil on Navy ruled paper and envelope | 2 sheets
Holder: 東京大学柏図書館
Year registered: 2007