新らしい旋回圏試験法とその実船実験

概要

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The new method of this report is to be named PAL-test, because it employs several Parallel Alignment Lines, in navigational words, transit lines. If we measure only two series of data, namely time points of transits with a stop-watch, and ship's headings by a gyro-compass, while an actual ship is under stationary turnings across PALs, we can determine turning characteristics : angular velocity, turning radius, tangent speed, drift angle, pivoting point, and reach, advance, or transfer, tactical diameter of the ship, which are necessary to calculate the ship's path. Full-size experiments were carried out with a 360 GT training snip, and the usefulness of the method seems to be verified. Parallel quay lines along waterways in the Port of Kobe port, instead of PALs were employed, therefore, the experiments were partly unsatisfactory due to other ship's disturbances. The author proposes some plan of PALs to be constructed for public use.
社団法人日本船舶海洋工学会の論文