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[Letter dated Taishō 2.8.21 from Murakami, Director of Kure Naval Arsenal, to Matsumoto, Director of the Naval Technical Department: concerning the finished shapes of armor plates (two copies with identical text, the latter with drawings attached)]
- AI summary (β)
- This item is a letter dated August 21, Taishō 2, “Kure Works Secret No. 669,” from Murakami, Director of Kure Naval Arsenal, to Matsumoto, Director of the Naval Technical Department (two copies with identical text, the latter with drawings attached), presenting opinions on simplifying the finished shapes of armor plates. As an investigation report by the Steelmaking Department of Kure Naval Arsenal, it sets out a policy of making armor plates closer to rectangular, straightening their outlines, avoiding concave shapes, curves, complex sloped sections, and steps, and increasing bend radii in order to reduce “scrap” and machining work. Examples cited include the U-gō type, Chi-gō type, Rei type, No. 3 battleship, Nos. 2 and 3 battlecruisers, and Kongō “casemate,” among others. Keywords: armor plate, Kure Naval Arsenal, Naval Technical Department, Murakami, Matsumoto, Steelmaking Department, gun turret, casemate, KongōAuto-generated by Azure OpenAI gpt-5.5 from OCR text (which may contain errors) and image captions.
- Item ID
- 5721c787-a135-495e-acb0-6f38824304af
- Catalogue ID
- 22561001
- Card catalogue
- [Materials related to armor plate manufacture]
- Category
- 軍艦構造:装甲・防御
- Issued
- 1913-08-21
- Holder
- 東京大学柏図書館
- Year registered
- 2007
- Warship
- Warship
- GCV entities
- Drawing / Monochrome photography














































