The UK is surrounded by water, and ships are a comparatively slow means of transportation.
But we know what you mean... :)
...from London. Most of the country, and a large majority of the population, isn't in London.
You seem overly focused on London.
Because mainland Europe is larger than the uk?
> You seem overly focused on London.
Not really. I live a long way from London and haven't been there for many years. I do, however, know how things work in this country.
Speed is somewhat irrelevant here as what matters is how many ships per day they can process.
No, it's not, because people. I really don't see a future where anyone gives up civil aviation for the climate. More likely a combination of electrification, biofuel, and hydrogen will be the solution.
Ship journey time is irrevelant to volume | tonnage moved as the limiting factors are port capacity and water approach limitations.
A ship journey is a long pipe, you can pop 6 ships a day in one end and have 6 ships a day arriving at the other end.