http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395514merchant vessels http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395514 watercraft by function BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395514 merchant vessels by type of service NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395514 merchant vessels by cargo type NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395514 merchant ships UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395514 merchant vessel UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395514 ships, merchant UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395514 vessels, merchant UF