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ウルシーおよびラバウルで計測したアウトリガーカヌーの形状について


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Title: ウルシーおよびラバウルで計測したアウトリガーカヌーの形状について
Other Titles: Comparative Studies on Hull Shapes of Outrigger Canoes from Ulithi Atoll and Rabaul
Authors: 西田, 英明 / 高山, 久明 / 真野, 季弘 / Flores, Efren Ed. / 柴田, 恵司
Authors (alternative): Nishida, Hideaki / Takayama, Hisaaki / Mano, Suehiro / Shibata, Keishi
Issue Date: Mar-1987
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.61, pp.37-49; 1987
Abstract: Outrigger canoes have outriggers on one or both sides to increase their seaworthiness. The canoes with one outrigger float, single riggers, are often found around the Tropical Pacific area, while double riggers with outriggers on both sides are mainly ranged in areas from the Philippines to Indonesia. A series of measuremental surveys of 14 single riggers, was undertaken at Ulithi Atoll, Yap of Micronesia and Rabaul, New Britain I. of Papua New Guinea in the month of November, 1986. Some statistic considerations, applied with 8 dimentional ratios of the hulls and outriggers of the 14 canoes, was made and their local variations in shape and size are well acertained in comparison with 145 outriggers in Philippine and Indonesia: 1) The canoes in Ulithi and Rabaul have an outrigger float of a tropical wood, "breadfruit tree", while Indonesian and Philippine canoes generally have two outrigger floats of bamboo. The Ulithi canoes with a short float, have symmetry hulls in profile and replace the foremost points of their two boomed triangle sails, knitted of "pandanus leaves", from one end to other end of the canoes as to keep wind on their float side, whenever the canoes greatly change their sailing directions. 2) The canoes have remarkable localities on their hulls and outriggers in shape and size by each location and these results are supported from some statistic considerations, including cluster analysis. One of the most distinct difference between single and double rigger canoes is found in shape and relative size of the outrigger booms held the floats and the length of the booms are relatively long on the single riggers. / 1)アウトリガーカヌーは,地域毎にそれぞれ異なった船型を持っている。このことは,クラスター分析の結果からも支持される。 2)シングルリガーとダブルリガーとは,特に浮体支持長の長さにおいて,明らかな相違があり,シングルリガーの方が長い。 3)ウルシーのカヌーは,幅の割に深さが深く,ラバウルのカヌーは,浅いが,いずれもアウトリガーカヌーの平均的な船型を持っている。 4)ウルシーとラバウルの浮体は,木製であり,他の地域は,竹製である。また,ウルシーのカヌーの浮体は,全14の地域の中で最も短く太い。
URI: http://hdl.handle.net/10069/30313
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第61号

Citable URI : http://hdl.handle.net/10069/30313

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