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Mooring boats go anchor and ship icing are two of the more common sea ice disaster in the ships at sea. More severe ice conditions, the small and medium-sized ship is easy to take the role of sea ice anchor, causing collisions, groundings and other serious accidents. Currently, the safety of the ship in ice anchored mostly stay in the empirical method. Have serious limitations due to the lack of quantitative calculations, the empirical method in practical applications. In suitable weather conditions, waves droplets of ice accretion on small and medium-sized ships hazards can not be ignored, and even cause the ship to capsize. However, in practical operation, ship icing hazards not taken seriously enough. Therefore, the anchored ship by force and waves droplets on the ice icing quantitative calculation and analysis of the hazards of the ship, to deepen the understanding of the majority of the crew of the ship by force and icing hazards and improve the safe navigation of the ship in ice the guiding significance. The paper analyzes the role of sea ice and ship destruction, reference sea ice structures static ice force formula, of comprehensive wind, flow impact force suffered by the calculation of the ship in the ice anchor. On this basis, it is assumed that the anchor in any case able to maximize grip, calculate the chain length of the smallest out of the ship in the external force. Smallest ship out the chain length increases with wind speed, top declination, the ice thickness increases; led to the 3,000-ton ship to go anchor in normal weather conditions, the sea ice of the ice thickness 4cm; ice thickness calculation shows that: The 9cm sea ice can lead ton ship go anchor. Therefore, the tonnage smaller vessels should avoid anchoring ice. The paper analysis of the ship waves droplets on wave models applied in the calculation the waves droplets on the waves onboard coordinate system. On this basis, the reference to the empirical formula of the small and medium-sized ship on the waves of the ocean waves droplets, meter and waves droplets of movement and cooling, ship icing, icing distribution were calculated. Based on the above results, calculate the icing on the ship floating stability. Assumptions ship icing for 24 hours, by the calculation shows: top declination 0 ° -45 °, ship stability criterion numeral K with the top declination decreases; top declination 45 ° -90 ° K followed increases; top declination about 45 ° K reaches a minimum, in the the larger Speed, wind conditions, the K <1, and ship overturning danger. Also, K with wind speed increases, speed decreases. Therefore, considering a variety of factors, the ship should be smaller top declination, Speed ??sailing. If the expected wind larger ship should be sheltered. Analysis and quantitative calculation of the papers, to deepen understanding of the crew on the ice mooring the ship by force and icing hazards, and to provide a basis for decision making for the safe navigation of the ice.
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