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Regarding the development of a land support system based on weather routing to calcu 塾 ate the optilnal route of the vessel ， which is required to use the high accuracy datasets of predicted ocean environments ． However 」 recent weather routing services are not possible to forecast the enviro 皿 nental da耄 asets and depending on a few forecast agencies with high − cost in the limited sea ar 翩 ， Jn this paper ， we develop a numerical weather prediction system f｛)r the weather routing service ， which is based on the parallel processing t。chn 。 logy． 血 addition ， we propose a package − based depl。 yment mech

In this paper, the effect of weather routing and ship operations on the extreme vertical bending moment (VBM) in a 6000TEU class large container ship which is operated in North Atlantic Ocean is addressed. A direct time-domain nonlinear response simulation method taking account of the wave-induced vibrations is combined with a voyage simulation based on 10 years of meteorological data in the area. The probability distribution of the ship's operational parameters conditional upon the meteorological conditions is considered. It is clarified that the most severe wave condition with the significant wave height over 16 m in the area may not be encountered by the ship due to the weather routing and the extreme value is determined mostly by the wave condition much milder than the most severe in the area. It is also found out that the ship speed assumed in the most contributing sea state strongly affects the extreme value of the total VBM. It is explained by the fact that the wave-induced vibrations in the ship tend to be excited at faster speed.

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