USS Guardian (NCC-44821)

The USS Addis Ababa (NCC-48922) was an Ambassador-class Federation explorer starship in service to the Federation Starfleet in the 24th century.

Nikos Demetriou served as the security chief and tactical officer on board the vessel from 2343 to 2348. (Star Trek: Remington)

Ambassador-class starships
Prototype (2322): USS Ambassador
USS Adelphi - USS Baikonur - USS Bonaventure - USS Columbia - USS Cortéz - USS Cygnus-B - USS Enterprise-C - USS Excalibur - USS Exeter - USS Finian - USS Gandhi - USS Hannibal - USS Horatio - USS Joan of Arc - USS Olympia - USS Reliant - USS Valdemar - USS Yamaguchi - USS Zhukov
Churchill variant (2335): USS Churchill
Starfleet International: USS Corsair - USS Highlander - USS Jamestown-C - USS Ma'at - USS Merlin - USS Winter Solstice
Star Trek: Shadowstar Station (2339-2349): USS Annan - USS Ban - USS Boutros-Ghali - USS Guterres - USS Hammarskjöld (II) - USS Lie - USS Pérez de Cuéllar - USS Stormgren - USS U Thant - USS Velasco - USS Waldheim
Bravo Fleet: USS Cumberland - Chronicle: USS Chronicle - USS Terra Nova - Dark Territory: USS Soval - Star Trek: Luna: USS Metternich - Star Trek: Pendragon: USS Cuxhaven - USS Damascus - USS Excalibur - USS Exeter - USS Gandhi - USS Wayfarer - Star Trek: Phoenix-X: USS Grolier - Star Trek: Pioneer: USS Valdemar - Star Trek: Ranger: USS Ranger - Star Trek: Remington: USS Guardian - USS Midway - USS T'Plana-Hath - USS Winston Churchill - Star Trek: The Adventures of Argus: USS Argus - USS Reliant - Star Trek: The Cantabrian Expeditions: USS Christchurch - USS Hillary - USS McKinnon - USS Ruapehu - USS Vicksburg - Star Trek: The Nomad Frontier: USS Courageous - Star Trek: The Quarterdeck Breed: USS Exeter - Star Trek: The Star Eagle Adventures: USS Columbia - USS Horatio - Star Trek: The Webcomic: USS Vikrant - Star Trek: Unity: USS Excalibur - USS Baldwin: USS Wildfire - The Unreliable's Light: USS Whistler - USS Valentine
Starfleet Command (RPG): USS Gandhi - USS Valdemar
Trekmania: USS Adirondack - USS Altair - USS Bounty - USS Champlain - USS Columbus - USS Constant - USS Cortéz - USS Delta - USS Devane - USS Emphatic - USS Essex - USS Hercules - USS Holland - USS Justice - USS Kalmar Nyckel - USS Kismet - USS Marikidia - USS Mirax - USS Moscow - USS Murasaki - USS Norfolk - USS Norton - USS Olympia - USS Perseus - USS Premier-A - USS Pride - USS Principle - USS Proxima - USS San Francisco - USS Smithson - USS Storm - USS Sublime - USS Tomcat - USS Toulouse - USS Tracker - USS Trondheim - USS Valiant - USS Venerable - USS Virginia

Starships of Star Trek: Remington
Federation Starfleet starships: USS Addis Ababa - USS Agamemnon - USS Balboa - USS Benjamin O. Davis - USS Benjamin Franklin - USS Calgary - USS Christa McAuliffe - USS Edinburgh - USS El Alamein - USS Elijah Matthewson - USS Enterprise-F - USS Gibraltar - USS Guardian - USS Gustav P. Remington - USS Helena Harvey - USS Ingenuity - USS John Basilone - USS John Paul Jones - USS Kyle Fitzgerald - USS Lukas Armbruster - USS Midway - USS Milan - USS New York - USS Oracle - USS Phoenix - USS Queen Elizabeth II - USS Robin Olds - USS San Diego - USS Sergei Korolev - USS Theodore Roosevelt - USS Thomas A. Meyers - USS T'Plana-Hath - USS Ulysses S. Grant - USS Windsor - USS Winston Churchill
Federation Starfleet shuttlecraft: Horatio - Kiev
Federation Merchant Service: SS Peloponnesus
Earth Starfleet starships: Endeavour
Romulan Star Navy: IRW Karazon - IRW Raptor's Claw - IRS Tomalak
Confederate Fleet: RCS Notarak
Dominion Grand Fleet: DSS Enterprise (NCC-1701) - DSS Enterprise (NCC-1701-F) - DSS Gustav P. Remington - DSS Unconquerable