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Abstract
The Yarabuoki underwater site contains seven iron grapnel anchors and Early Modern Okinawan ceramic jars and is dated to the 16th–19th centuries. The site lies at a depth of 12–32 m off the western coast of Ishigaki Island in Okinawa, Japan. Based on underwater archaeological and broadband multibeam surveys, as well as historical research of the artefacts and Early Modern Ryukyuan shipping, we discuss the possible anchor and vessel types in Ryukyu and Eastern Asia in Early Modern times. We also discuss the efficacy of low‐cost ROV for assisting surveys in shallow‐water environments and the value of educational programmes for promoting the management and conservation of underwater cultural heritage.
Abstract
要約
屋良部沖海底遺跡は-16ཞ19世紀頃と推測さ-る沖縄近-陶器群と7点の四爪鉄錨から-る。遺-は沖縄県の石垣島西岸の水深12-32mの海底に位置して-る。本論文では-この遺跡で発見され-遺物群を対象としたこれま-の水中考古学的調査とマルチビ-ム探査の成果から-近世琉球王国にお-る海運で利用されていた船や-それらの船が搭載していた錨のタイプについて論-る。このほ-に本論文では-この遺跡調査で新た-開発した低コ-ト型のROVに-る沿岸海域での効用、水中文化遺産の保全と活用を目的と-た教育プログラ-開発にお-る新たな可能性についても論-る。
Acknowledgements
This interdisciplinary research is part of the larger‐scale study project ‘Coastal Area Capability Enhancement in Southeast Asia’ (headed by Dr Satoshi Ishikawa) by Research Institute for Humanity and Nature, Kyoto, Japan, and Japan Society for the Promotion of Science (JSPS) Grant‐in‐Aid for Scientific Research (A) No. 25242026 ‘Development of coastal seafloor geomorphology using Multibeam Echosounder and application to disaster and environmental sciences’ (chief investigator: H. Kan). The educational programmes and production of the robots are also partly supported by Research and Study Project of Tokai University Educational System General Research Organization (chief investigator: R. Ono). We also would like to acknowledge Mr Seiji Fujii, Mr Hiroki Miyagi, Ms Ayano Shimabukuro, Mr Toshiaki Hayashibara, and Mr Hironobu Matsui for the considerable supports of our research and studies in the Yaeyama Islands.