nid: 46142 doc_type: 説明用草稿? item_summary: 本資料は、軍艦構造における「水中防禦」を主題とする説明用草稿と思われる手書き文書の複写で、船体断面または防禦構造を示す略図を交え、水中爆発への防禦、鋼板、V.N.C等に関する構造上の比較・意見を記す。主要な人物・組織・具体的艦船名は確認できず、対象艦種はBattleship。年代・刊行情報は不明。キーワード: 水中防禦, 軍艦構造, 装甲, 防御, Battleship, V.N.C, 鋼板, 爆発, 断面図 title: 水中防御 card_catalog: 〔「戦艦ニ於ケル水雷防御ニ付テ」その他関係史料〕 indexed_at: 2026-04-28T13:07:25.862953+00:00 cat_id: 10490301 registered_year: 2007 node_uuid: aa1a8f54-6d46-449c-a071-dffcd7e2bfdb vision_entities: text, font, paper, document, product canvas_count: 1 warship: Battleship color_mode: monochrome item_id: 90738da3-7784-4b92-9d3e-3ed4270d7825 image_url: https://iiif.dl.itc.u-tokyo.ac.jp/repo/s/hiraga/document/8633aeb0-0150-44d1-bab1-f9eee9616223 old_manifest: https://iiif.dl.itc.u-tokyo.ac.jp/repo/iiif/8633aeb0-0150-44d1-bab1-f9eee9616223/manifest holder: 東京大学柏図書館 source_oai_id: oai:iiif.dl.itc.u-tokyo.ac.jp:108087 iiif_manifest_id: 8633aeb0-0150-44d1-bab1-f9eee9616223 iiif_service_id: https://iiif.dl.itc.u-tokyo.ac.jp/iiif/hiraga/10490301/10490301-001_001.tif description_raw: ID: 10490301 | 文書種類: 説明用草稿? | カード目録: 〔「戦艦ニ於ケル水雷防御ニ付テ」その他関係史料〕 | カテゴリ: 軍艦構造:装甲・防御 | 所蔵: 東京大学柏図書館 | 登録年: 2007 | エンティティ（Google Cloud Vision）: text | エンティティ（Google Cloud Vision）: font | エンティティ（Google Cloud Vision）: paper | エンティティ（Google Cloud Vision）: document | エンティティ（Google Cloud Vision）: product | 軍艦: Battleship path_alias: /assets/90738da3-7784-4b92-9d3e-3ed4270d7825 extent_text: 海軍罫紙カーボン | 2枚 item_summary_model: gpt-5.5 item_summary_at: 2026-04-28T13:07:32.636719+00:00 description_raw_en: ID: 10490301 | Document type: Draft for explanation? | Card catalog: [“On Torpedo Defense in Battleships” and Other Related Historical Materials] | Category: Warship construction: Armor and defense | Holding: University of Tokyo Kashiwa Library | Year registered: 2007 | Entity (Google Cloud Vision): text | Entity (Google Cloud Vision): font | Entity (Google Cloud Vision): paper | Entity (Google Cloud Vision): document | Entity (Google Cloud Vision): product | Warship: Battleship extent_text_en: Navy ruled paper, carbon copy | 2 sheets i18n_translation_model: gpt-5.5 title_en: Underwater Defense i18n_translated_at: 2026-04-29T03:04:41.183235+00:00 item_summary_en: This item is a copy of what appears to be a handwritten draft for explanation on the subject of “underwater defense” in warship construction. With schematic diagrams showing a hull cross-section or defensive structure, it records structural comparisons and opinions concerning defense against underwater explosions, steel plates, V.N.C., and related matters. No principal persons, organizations, or specific ship names can be confirmed; the target ship type is Battleship. Date and publication inform… card_catalog_en: [“On Torpedo Defense in Battleships” and Other Related Historical Materials]