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5.5 HEATED CARGO PREPARATIONS
The chief officer must be aware of the progress of the cargo heating
and the fact that the heating requirements may increase as the vessel
nears the discharge port. From October through May, ports north of a
line connection Cape Hatteras and Ushant in the Atlantic and Kyushu,
Japan and the US/Mexico border in the Pacific, are considered to be
'cold water ports'. These ports require special cargo heating attention.
This is particularly true approaching US and Canadian ports, where considerable
additional heating will be necessary to achieve further cargo temperature
increases once the ship passes the western edge of the Gulf Stream.
Care must be taken not to overheat the cargo. The temperature in all
tanks must be checked daily.
He should therefore ensure that if all tanks cannot be brought to discharge temperature before arrival, heating should be concentrated on the first set of tanks to be discharged.
Any port north of the line and any port in the Mediterranean Sea, is considered a cold water port from October through May, for the purposes of cargo heating instructions.