ship routeing is required as per SOLAS ch V
routeing is art of achieving a safe, economic passage across ocean taking into account all meteorological and oceanographic factor into consideration
factor ::
1 distance
2 ocean currents
3 wind and waves
4 ice
5 fog
6 temperature
climatelogical routeing -- solely done by ASD and ocean passage of the world.
it depends on season not on current weather.
there is difference between climate and weather
weather routeing best for north Atlantic and pacific ocean as day to day change in weather is drastic.
WMO : world meteorological organisation gathers data for routeing.
weather routeing is not possible world wide mostly in southern hemisphere due to lack of data
ship performance curve :
factors : 1 current
2 wave characteristics
under SOLAS chapter 5 owner is required to have contract with weather routeing agency.
curve of ship's performance made at yard and corrected regularly by designated routeing company or agency.
curve depends on 1 hull form at various condition of loading
2 wave angle
3 wave height
4 wave period
weather routing by master
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