Yes there is.
Port of Liverpool Building was created in 1907.
Liverpool was to be the registered home port of the Titanic. The home port is marked on the ship.
Liverpool
Liverpool is a port, so it is at Sea Level.
Liverpool
On the back of the ship it said Titanic Liverpool, because Liverpool was its port of registry.
I don't know that a city can be said to have a function, but basically Liverpool grew up as a port.
Ships typically have the name and their home port on the stern of the ship. Liverpool was to be the home port of the Titanic.
Because it was the registered home port
Because it was a large industrial city & a major port
Liverpool was a major port so a large part of the economy was related to shipping.
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