About the turning locus of a ship in calm water - Turning trial

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About the Turning Locus of a Ship in Calm Water

Turning Triál

-in By Shösuke INOUE Masayoshi MURAKAMI Masaaki HIRANO

öru INOtJE

Lab. y.

Scheepsbouwkunde

Technische Ilogeschool

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Reprinted from

JOURNAL OF SIBU ZÖSN KAI

(THE SOCIETY OF NAVAL ARCHITECTS OF WEST JAPAN)

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About the Turning Locus of a Ship in Calm Water

- Turning Trial

By Shösuke INOUE Masayoshi MURAKAMI Masaaki HIRANO Tôru INOUE Abstract

It is very important to evaluate the turning locus of a actual ship, but is insufficient

due to the measurement error of a actual ship turning locus and the inaccuracy of

derivatives etc. to calculate. We calculate the actual ship's turning locus by the author's

turning derivatives, Fujii's rudder force formula and the method of DTMB in longitudinal

direction. By the result of comparison of the data to be done carefully for the turning trial, it becomes sure its calculation is correct. Also by this method the same turning

trial data of 3 same ships have been computed and its method has been recognized again. 59

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(3439)

K. S. M. Davidson and L. i. Schiff:

Turning and course Keeping qualities SNA, & ME 1946.

Maneuvering characteristics of the Marine± type ship (USS COMPASS ISLAND) in calni seas. D.T.M.B. 1961.

FEÏ2b :

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S. moue Équation of motion añd force acting upon ship body.

60th Unniversary series Vol. 11. The society of naval architects of Japan.

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