http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532utility and service vessels http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 watercraft by function BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 research vessels NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 law enforcement vessels NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 harbor and channel craft NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 emergency vessels NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 communications vessels NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 assistance vessels NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 pilot boats NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 utility boats NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 hulks NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31395532 tenders NT