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[Letter from Engineer Shibano to Rear Admiral (Shipbuilding) Hiraga, dated August 18, Taisho 12 (1923)]

AI summary (β)
This item is a letter dated August 18, Taisho 12 (1923), from Engineer Shibano to Rear Admiral (Shipbuilding) Hiraga, also serving as a written opinion concerning the cause of bending and damage at the forward end of the bilge keel of the warship Yubari. From the Shipbuilding Department Drawing Workshop, it describes the circumstances leading to the rejection of the theory that stream pressure during high-speed running in heavy seas was the cause, and to the judgment that the damage was caused by the anchor chain and cable during anchoring and weighing anchor. It also mentions Onuma’s eyewitness account, the report to the captain, and regret that no diver inspection was carried out. In addition, it records views on the blast screen supports, damage restoration work, and proposed modifications. Keywords: Yubari, Rear Admiral (Shipbuilding) Hiraga, Engineer Shibano, Shipbuilding Department Drawing Workshop, bilge keel, anchor chain, anchoring, damage restoration workAuto-generated by Azure OpenAI gpt-5.5 from OCR text (which may contain errors) and image captions.
Item ID
230eaf04-d4a4-4006-ba8a-20d767444b42
Catalogue ID
22171501
Card catalogue
[Materials concerning the warship Yubari]
Category
巡洋艦:夕張
Holder
東京大学柏図書館
Year registered
2007
Warship
Warship
GCV entities
Artwork / Drawing

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