[Tagging] landuse=industrial with industrial=port

[Malcolm Herring]

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.