Strength Test on the Actual SWATH Ship

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  • SWATH型双胴船の強度に関する実船試験
  • SWATHガタ ソウドウセン ノ キョウド ニ カンスル ジッセン シケン

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As weight reducing is most important for SWATHS (Small Waterplane Area Twin Hull Ship) in attaining higher speed due to its sensitiveness, special structure system was applied to the main hull of the SWATHS, which was constructed in our yard, based on the following design concept. (i) Thickness of skin plates to be applied is so thin as to be sufficient for strength to lateral pressure. (ii) Instead of the above, main structural supports which consist of plate girders of I-section keep sufficient strength even though neglecting the skin plates effects. Nevertheless, there seems to be considerable effects of the thin skin plates. In order to clarifying the above concept and to confirm strutural characteristics in strength of new ship type, bending tests on actual SWATHS were carried out at our pier when completed. Results of the tests show the effectiveness of the thin plates and possibility of reducing weight with further study executed.

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