{"@context":"http://iiif.io/api/presentation/4/context.json","id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/manifest","type":"Manifest","label":{"ja":["天城型巡洋戦艦（線図からの3D復元）"],"en":["Amagi-class battlecruiser (3D reconstruction from line drawings)"]},"summary":{"ja":["平賀譲デジタルアーカイブ（東京大学）所蔵の天城型巡洋戦艦 B-C 正面線図をもとに、主要目（水線長・幅・喫水・排水量）と正面線図から実測した中央断面オフセットだけを入力として、パラメトリック・ロフトで水密な 3D 船体を復元したものです。排水量は prismatic 係数を二分法で較正し、ロフト後に NURBS 曲面（STEP）とメッシュ（STL/GLB）を書き出しています。本モデルは線図の主要目を満たす復元であり、原設計の細部を厳密に再現するものではありません。"],"en":["A 3D reconstruction of the Amagi-class battlecruiser, lofted parametrically from only the principal dimensions (length, beam, draught, displacement) and the midship-section offsets measured from the B-C body plan held in the Hiraga Yuzuru Digital Archive (University of Tokyo). Displacement was calibrated via the prismatic coefficient (bisection); watertight mesh (STL/GLB) and exact CAD surfaces (STEP) were exported after lofting. The model satisfies the drawing’s principal dimensions and is not a faithful reproduction of the original design in every detail."]},"metadata":[{"label":{"ja":["艦級"],"en":["Ship class"]},"value":{"ja":["天城型"],"en":["Amagi class"]}},{"label":{"ja":["艦種"],"en":["Ship type"]},"value":{"ja":["巡洋戦艦"],"en":["Battlecruiser"]}},{"label":{"ja":["主砲"],"en":["Main gun"]},"value":{"ja":["41cm"]}},{"label":{"ja":["砲塔配置"],"en":["Turret layout"]},"value":{"ja":["2-1-2"]}},{"label":{"ja":["水線長"],"en":["Length (WL)"]},"value":{"ja":["246.9 m"]}},{"label":{"ja":["最大幅"],"en":["Beam"]},"value":{"ja":["30.5 m"]}},{"label":{"ja":["喫水"],"en":["Draught"]},"value":{"ja":["9.53 m"]}},{"label":{"ja":["排水量"],"en":["Displacement"]},"value":{"ja":["約41,000 t"],"en":["approx. 41,000 t"]}},{"label":{"ja":["速力"],"en":["Speed"]},"value":{"ja":["30 kt"]}},{"label":{"ja":["煙突数"],"en":["Funnels"]},"value":{"ja":["2"]}},{"label":{"ja":["年代"],"en":["Date"]},"value":{"ja":["c.1918-20"]}},{"label":{"ja":["復元手法"],"en":["Reconstruction method"]},"value":{"ja":["線図・主要目からのパラメトリック復元（複数エージェントで図面照合）"],"en":["Parametric reconstruction from line drawings and principal dimensions (cross-checked across agents)"]}},{"label":{"ja":["来歴（原資料）"],"en":["Provenance (source drawings)"]},"value":{"ja":["平賀譲デジタルアーカイブ（東京大学）"],"en":["Hiraga Yuzuru Digital Archive (University of Tokyo)"]}},{"label":{"ja":["CADデータ (STEP)"],"en":["CAD data (STEP)"]},"value":{"ja":["https://archivebase-s3.ldas.jp/archivebase/nakamura196/3aa78bb8-ca3d-4076-8278-ebdf4a2fd342/hull.step"]}},{"label":{"ja":["メッシュ (STL)"],"en":["Mesh (STL)"]},"value":{"ja":["https://archivebase-s3.ldas.jp/archivebase/nakamura196/115267c3-028f-4828-9937-d73d1220fb59/hull.stl"]}},{"label":{"ja":["回転アニメ (MP4)"],"en":["Turntable animation (MP4)"]},"value":{"ja":["https://archivebase-s3.ldas.jp/archivebase/nakamura196/233ff4dd-1e5b-4c98-ad65-d17cb24f67db/turntable.mp4"]}},{"label":{"ja":["オフセット表 (CSV)"],"en":["Offset table (CSV)"]},"value":{"ja":["https://archivebase-s3.ldas.jp/archivebase/nakamura196/61d8a5e8-e5ea-4941-a2c6-816d84684332/offsets.csv"]}}],"thumbnail":[{"id":"https://archivebase-s3.ldas.jp/archivebase/nakamura196/0194de60-455d-4aec-9099-2f423c2649fb/thumb.png","type":"Image","format":"image/jpeg"}],"homepage":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/item/amagi","type":"Text","label":{"ja":["詳細ページ"],"en":["Detail page"]},"format":"text/html"},{"id":"https://hiraga.dl.itc.u-tokyo.ac.jp","type":"Text","label":{"ja":["出典"],"en":["Source"]},"format":"text/html"}],"rendering":[{"id":"https://archivebase-s3.ldas.jp/archivebase/nakamura196/a317c094-8293-4fe8-96dc-205851465b8b/model.glb","type":"Model","label":{"ja":["3Dモデル (GLB)"],"en":["3D model (GLB)"]},"format":"model/gltf-binary"}],"items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1","type":"Scene","label":{"ja":["天城型巡洋戦艦（線図からの3D復元）"],"en":["Amagi-class battlecruiser (3D reconstruction from line drawings)"]},"backgroundColor":"#000000","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/page","type":"AnnotationPage","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/model","type":"Annotation","motivation":"painting","body":{"id":"https://archivebase-s3.ldas.jp/archivebase/nakamura196/a317c094-8293-4fe8-96dc-205851465b8b/model.glb","type":"Model","format":"model/gltf-binary"},"target":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1"}]}],"annotations":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/annotations","type":"AnnotationPage","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/annotation/forward-main-turrets","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"41cm 連装砲塔 2基","label":"前部主砲（2基・連装）","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":204.92,"y":0,"z":18.59,"normal":[0,0,1]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/annotation/amidships-main-turret-s","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"中央部の主砲","label":"中央主砲（1基）","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":123.44,"y":0,"z":17.68,"normal":[0,0,1]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/annotation/aft-main-turrets","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"41cm 連装砲塔 2基","label":"後部主砲（2基・連装）","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":41.97,"y":0,"z":18.59,"normal":[0,0,1]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/annotation/funnels-2","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"煙突2本。設計案により本数が変化。","label":"煙突（2本）","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":158.01,"y":0,"z":24.99,"normal":[0,0,1]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/annotation/bridge","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"艦橋構造","label":"艦橋","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":180.23,"y":0,"z":21.95,"normal":[0,0,1]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/annotation/foremast","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"前部マスト","label":"前檣","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":175.29,"y":0,"z":32.61,"normal":[0,0,1]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1/annotation/mainmast","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"後部マスト","label":"主檣","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/warship-3d/api/iiif/4/amagi/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":108.63,"y":0,"z":31.09,"normal":[0,0,1]}]}}]}]}]}