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CONCLUSION
 
From the above result, the Kite Towing System has the function of suppressing the "whirling motion" and reduces the snap tension that occurs at the towing rope. We also come to know that the tension on the respective ropes decreases because the two ropes are used.
 
The future research remains are closer to the actuality. Our rope restoring force model is the linear spring model. Because of this, calculation time is reduced and length of the towing rope, the balancing position could have been maintained easily to the neutral position. In practice, the calculation with the use of non-linear spring model is more natural and necessary. We will continue our research by further developing calculations in such aspects and at the same time the quantitative model tests or actual sea trials should be performed and compared with the result of this study.
 
REFERENCES
 
Hara, S., K. Yamakawa, K. Hoshino and K. Yulkawa. 2000. On the Towing of Damaged Ships J. Kansai Soc., N.A, Japan, No.233, March; 71-78.
 
Hirano, M. 1983. On Calculation Method of Ship Maneuvering Motion at Initial Design Phase JSNAJ, No.147; 144-153.
 
Inoue, S., M. Hirano, K. Kijima and J. Takashina. 1981. A Practical Calculation Method of Ship Maneuvering Motion. ISP, Vol. 28, NO. 325;207-222.
 
Kijima, K. and Y. Wada 1983. Course Stability of Towed Vessel with Wind Effect. JSNAJ, No, 153;117-153.
 
Kijima, K., K. Maekawa and K. Tanaka. 1992. The Directional Stability of Tow and Towed Vessels in Shallow Water, J. West Japan Soc., N.A., Japan, No.84, 1992;85-96.
 
Kijima, K., T. Kishimoto and K. Suenaga. 2000. On the Towing Characteristics of Disabled Ship. J. West Japan Soc., N.A., Japan, No. 100;17-29
 
Terao, Y. and T. Nikko. 2000. A Basic Study of The Kite Towing System (Anti-Symmetric Towing Method) J. Kansai Soc., N.A., Japan, No.234, September; 109-113.
 
Yuhara, K., K. Hoshino, S. Hara, and K. Yamakawa. 1999. Dynamic forces acting on capsized vessel with geometric configuration and its towing method, JSNAJ, No.186; 145-156







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