ケーブル布設船の針路保持に関する研究(第一報)

概要

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A cable ship is required to have the ability to manoeuver for precise track-keeping and position-keeping for laying the underwater cable. Especially, a cable ship has to work with the utmost care for laying an optical fiber cable be in great demand recentry. One of the most important parameter in these manoeuvre is the course stability of a cable ship including the relationship between ship and cable system. This paper discusses on the effects of water depth, length of cable and condition of sea bottom on the course stability of a cable ship by the numerical calculations as the first report. As the results of calculations, we get the following conclusions. (1) There are the stable and unstable zones on course stability of a cable ship as function of water depth and length of cable. (2) In general, a cable ship becomes stable as increasing depth of water if the ratio of length of cable and water depth is constant. (3) As the soil of sea bottom becoming hard, a cable ship will be stable. (4) On the effect of length of cable, the ship is becoming stable as increasing cable length, but in the region of much more longer cable the ship becomes unstable. As the above conclusions, it will need to consider the effects of water depth, cable length and nature of soil of sea bottom for control of a cable ship.
社団法人日本船舶海洋工学会の論文
1989-03-15