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For each of the area's on the ''Centroid-worksheet'' a row and a column is created in the ''Container port worksheet''. In addition two columns that document a port have been added: one column is a link the wikipedia-page of the port and one column is a link to the port authority of the port.
 
For each of the area's on the ''Centroid-worksheet'' a row and a column is created in the ''Container port worksheet''. In addition two columns that document a port have been added: one column is a link the wikipedia-page of the port and one column is a link to the port authority of the port.
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Each cell that links to ports shows the maritime distance between the two ports, as calculated by [https://www.searates.com/services/distances-time/ Searates].
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Each cell that links to ports shows the maritime distance between the two ports, as calculated by [https://www.searates.com/services/distances-time/ Searates] (black).
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There are many maritime routes that use the same sea passages, such as the Gibraltar straits. Instead of looking up all the routes in [https://www.searates.com/services/distances-time/ Searates], it is easier to look up the distances to a port on the strait and just copy the corresponding data. Only for the water basin behind the strait we need to do the lookup.
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Ports that are not listed in Searates (or could not be found) have been taken from Shiptraffic. This requires conversion from nautical miles to kilometres (light green 1)
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Some (landlocked) countries share ports. In that case the distances are linked, either between rows of the same port (light red 1) or between columns (orange).
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There are many maritime routes that use the same sea passages, such as the Gibraltar straits. Instead of looking up all the routes in [https://www.searates.com/services/distances-time/ Searates], it is easier to look up the distances to a port on the strait and just copy the corresponding data. Only for the water basin behind the strait we need to do the lookup. The distances obtained via these strait ports have been coloured.
    
This can be done for:
 
This can be done for:
* Baltic sea / Copenhagen port
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* Baltic sea <-> North Sea : Copenhagen port (cornflower blue)
* Black sea / Istanbul port
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* Black sea <-> Mediterranean : Istanbul port (cyan)
* Adriatic sea / Tirana port
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* Adriatic sea <-> Mediterranean / Durres port (cornflower blue)
* Mediterranean / Gibraltar and Damietta
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* Mediterranean <-> Atlantic Ocean / Algeciras (Gibraltar) (cyan)
* Great Ocean / Panama
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* Mediterranean <-> Red Sea / Damietta (purple)
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* Great Ocean <-> Atlantic Ocean / Panama (green)
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For some ports there are some exceptions to the rules described above:
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* Faroer (Tórshavn) - is only supplied through Reykjavik and Helsingor (Denmark). The distances are calculated by the distance to Copenhagen plus 1870 km.
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* Svalbard (Longyearbyen) - is only supplied through Tromsø (Norway. The distances are calculated by the distance to Oslo + 1695 nautical miles.
    
==== Maritime Route matrix worksheet ====
 
==== Maritime Route matrix worksheet ====
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