It is always useful to see where your cruise ship is likely to dock when in Barcelona, this allows you to plan your independent excursions, see where the City Sightseeing Bus stops, how far it is to walk to Las Ramblas.
The map below shows all the ships currently in the Port of Barcelona.
The dark blue diamonds represents passenger ships, if you hover over the diamonds you will see the name of the ship, clicking on the diamond will display information about the ship, where it is heading together with a photo of the ship.
If your ship docks at Terminals A to D at the Adossat Quay Terminals, which are the furthest docks from the city centre, approximately 2kms, you can use the Blue Cruise Bus service that runs from all the Cruise port terminals to the monument of Christopher Columbus and back. This monument is a short walk from Las Ramblas.