Estación Maritima "Acciona Trasmediterranea", Moll de Sant Bertran" (Tel. +34 93 295 9100).

The Passenger Terminal "Acciona Trasmediterranea" is close to Plaza de la Carbonera, not far away from the World Trade Centre.
How to reach Plaza de la Carbonera :

From South: by the Ronda Litoral

From North: by the la Ronda Litoral, then continue by Paseo de Colon.

From the Centre of the town: by the Rambla or the Aveninguda del Parallel.

The Check-in dest is inside the Terminal builing.
On your navigator: TOWN = Barcelona – STREET = Moll de Sant Bertran.