The USS De Mayo (NCC-2029) was an Excelsior-class battleship in service to Starfleet in the 23rd and 24th centuries.

The De Mayo entered service on reference stardate 2/4510. She was eventually destroyed in action on stardate 2/7609. (FASA RPG module: Star Trek: The Next Generation Officer's Manual)

Excelsior-class class XIII/class XIV exploration cruiser/battleship starships
Federation Starfleet AchillesAcruxAgenaAgincourt (I)Agincourt (II)AjaxAlamoAl-BataniAllianceAnakAntaresAquilaArcturusAriesArizonaAustraliaBearnBelknapBerlinBetelgeuseBill of RightsBinarBismarckBrisbaneBunker HillCairoCanopusCapellaCarpenterChallengerCharleston (I)Charleston (II)ChekovChikumaClevelandColumbiaConcordConcordiaConstitutionCrazy HorseCrockettDallasDarionDaytonDe MayoEagleEnterpriseExcaliburExcelsiorExcelsior-DExeterFarragut (I)Farragut (II)FearlessFredricksonFusoGalactaGettysburgGorkonGrissomGuirierreHancockHoodHornetHowlandIntrepidJacksonJunoKirovKitty HawkKongoLakotaLassiterLexingtonLivingstonMalincheMatsumoMelbourneMissouriMontanaNew JerseyNew ZealandOhioOkinawaOrcaParisPolluxPotemkin (I)Potemkin (II)ProximaRepulseRighteousRomaRooseveltRoyal OakRyujoSarekSlaytonSpicaSussexTecumsehThundererTiconderogaValiantValley ForgeVegaVenaYamashiroYorktownunnamed Excelsior-class starships Emblem of the United Federation of Planets. Seal of the Federation Starfleet.
Interstellar Union Interstellar Guard
(alternate timeline)
Kumari II Emblem of the Interstellar Union.
Terran Empire Starfleet (mirror universe) ExcelsiorExcelsior-DPunisher Seal of the Terran Empire.
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