Complex sentence: The "Galicia" class, built in Ferrol, are two 13,900t landing platform dock ships, belonging to the Spanish Navy, and their mission is to carry amphibious warfare by transporting the bulk of the Infantería de Marina.
Split into simpler sentences: The "Galicia" class is a class of two 13,900 t landing platform dock ships, belonging to the Spanish Navy. Built in Ferrol, their mission is to carry amphibious warfare by transporting the bulk of the Infantería de Marina.