PROBLEM TO BE SOLVED: To provide a ship bottom shape capable of reducing underwater frictional resistance on a work barge, during navigation by a push boat for navigation, in a work barge having no self-navigation ability.SOLUTION: A notch-state recess part for allowing equipment of a push boat T1 for navigation, is provided on a stern part of a work barge 1. A tunnel 11 penetrating from a front part of the recess part to a stem of the work barge 1, and whose upper edge height is varied along a ship bottom longitudinal shape with a height of almost 30% of depth of the work barge 1, is provided. The cross sectional shape of the upper edge of the tunnel 11 is formed into a flat and linear cross sectional shape. Therefore, when the work barge 1 is navigated, an air bubble face which stays on the upper edge in the tunnel 11 can be expanded relative to that in prior art, therefore frictional resistance in the tunnel 11 can be further reduced relative to the prior art, so that resistance on the work barge 1 is further reduced, therefore an output the push boat T1 can be reduced.SELECTED DRAWING: Figure 12

    【課題】自航能力を有しない作業台船において、運航用の押船での航行時、作業台船の水中摩擦抵抗を低減する船底形状を提供する。【解決手段】作業台船1の船尾部に運航用押船T1を装備可能とするための切欠き状の凹部を設け、該凹部の前部から作業台船1の船首材まで貫通し、該作業台船1の深さの約3割の高さで船底の長手方向形状に沿って上縁の高さが変化するトンネル11を設け、トンネル11の上縁を平坦な直線状の横断面形状に形成する。それによって、作業台船1が運航される際、上記トンネル11内の上縁に滞留する気泡面を従来のものより広めることで、上記トンネル11内での摩擦抵抗を従来のものより更に減少させて、作業台船1の抵抗が従来のものより更に減少されて押船T1の出力低減が得られる効果がある。【選択図】図12


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    Title :

    BARGE TYPE PLATFORM FOR WORK BARGE


    Additional title:

    作業船の台船


    Contributors:
    NODA TOMONORI (author) / KATO MASARU (author)

    Publication date :

    2016-10-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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