실습선 한바다호의 강풍시 항내 어프로칭 조선 및 예인선 사용 기준에 관한 연구 |
정창현, 공길영, 이윤석 |
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Ship's Maneuverability & Required Number of Tug Boat in Strong Winds for the T.S. HANBADA |
Chang-Hyun Jung, Gil-Young, Kong, Yun-Sok, Lee |
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Abstract |
T.S. HANBADA has a relatively large hull and superstructures above the water line, so she has much of leeway or turning of bow with the effect of winds. Especially on berthing, unberthing and/or sailing on low speed, these effects take place more significant. Therefore, it was carried out the numerical calculation of the wind force and moments acting on the T.S. HANBADA, and then calculated the leeway angle and counter rudder angle with the relative wind direction and velocity. Also, it was suggested the maximum wind velocity which could be berthed or unberthed used by bow thruster and the tugboat operations in strong winds. These results will be great helpful to the vessels with large superstructures on ship's handling in harbour or tugboat operations. |
Key Words:
Wind force and moments;Leeway angle;Counter rudder angle;Maximum wind velocity;
Tugboat operations |
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