Ports and harbours are not the same thing. A harbour is merely a
sheltered body of water protected by man made or natural structures. A
port, on the other hand, is the whole infrastructure for handling ships
& their cargoes. This may include any number of harbour areas, but also
wharves, piers, docks, quays, warehouses, terminal buildings, admin &
customs offices, etc.
So such areas would be better served with a 'port' tag of some kind.
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