Challenger class (deep space explorer)

For other uses, see Challenger.

The Challenger-class was a type of Federation starship, a variant of the Constellation-class, a class of deep space explorer in Starfleet service in the 24th century. The USS Marco Polo was a Challenger-class starship. (TNG comic: "Thin Ice") The Challenger-class differs from the Constellation-class by having a secondary hull in place of the lower warp nacelle pair.

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Starship classes of the Federation Starfleet
subclass groups	*Akira* (Alita • Armitage • Thunderchild) • *Ambassador* (Alaska • Yamaguchi) • *Apollo* (Akula frigate / light cruiser) • *Chesapeake* (Mongrel) • *Cheyenne* (Dakota • Stargazer) • *Concorde* (Geneva battlecruiser • Presidio) • *Constellation* (Challenger deep space explorer) • Chimera heavy destroyer (Manticore) • *Constitution* (Achernar • Bonhomme Richard • Tikopai • Enterprise • Exeter • Excalibur • Vesper) • *Danube* (Yellowstone) • *Decatur* (Dreadnought) • *Defiant* (Gallant • Incursion • Sao Paulo • Valiant • Vigilant escort) • *Dervish* (Gryphon • Hermes escort • Maelstrom • Tempest) • *Destiny* (Nimbus • Oracle • Trident) • *Excelsior* (Bismarck • Kirov • New Jersey • Resolute) • *Galaxy* (Andromeda (25th century) • Celestial • Envoy • Galaxy X • Monarch cruiser • Ross • Venture cruiser • Yamato dreadnought) • Hermes scout (Cygnus • Monoceros) • *Inquiry* (Avenger battlecruiser • Arbiter) • *Intrepid* (Bellerophon • Cochrane science vessel • Discovery (science vessel) • Pathfinder) • *Kumari* (Charal • Khyzon) • *Luna* (Comet • Polaris • Sol) • *Miranda* (Anton • Reliant • Soyuz) • *Nebula* (Magellan) • *Norway* (Oslo) • *Nova* (Aurora • Quasar • Rhode Island) • NX (Columbia • Poseidon) • *Oberth* (Gagarin (23rd century) • Sagan) • *Olympic* (Hope • Horizon science vessel) • *Prometheus* (Cerberus • Hephaestus • Hestia • Phoenix) • *Ptolemy* (Dollond • Doppler • Keppler) • *Remora* (Charger) • *Saladin* (Cochise • Siva) • *Santa Fe* (Newport) • *Saber* (Gladius • Rapier • Ushaan) • *Sentinel* (Emissary • Nomad cruiser • Vanguard) • *Solanae* (Helios • Montgomery • Omega) • *Sovereign* (Archon • Imperial • Majestic • Noble cruiser • Regent) • *Steamrunner* (Zephyr) • *Vesta* (Aventine • Rademaker) • *Walker* (Georgiou) • *Wells* (Polarity)
other named classes	AA class • Aakenn • Achilles • Advance • Aegian • Aeolus • Aerie • Akula destroyer / escort • Ambassador Hardin • Andes • Andor • Andromeda (24th century) • Antares • Apache • Aquarius • Archer • Archimedes • Ariel • Ascendant • Atrox • Avenger (scout) • Babcock • Bader • Baker • Baton Rouge • Bode • Bolarus • Bonaventure • Bradbury • Brenton • California • Canada • Canopus • Capella • Castor • Centaur • Centaurus • Ceres • Challenger • Chandley • Chariot • Chimera fast frigate • Christopher • Cle Dan • Cochrane transport • Columbia • Continent • Contortrix • Copernicus • Crossfield • Daedalus • Dauntless • Decker • Defender • Delta • D'Kyr • Deneva • Derf • Drexler • Durrett • Eagle • Eclipse • Edward • Einstein • El Dorado • future Enterprise • Epoch • Epsilon • Erewon • Eternal • Federation • Fenlon • Fermi • Fiji • Freedom • Frontier • Gagarin (24th century) • Galen • Ganges • Geneva • Genser • Graceful • Grayson • Griffon • Guardian • Gemini • Hale • Hermes fast cruiser • Heston • Hogan • Hokule'a • Hoover • Horizon cruiser • Icarus • Ilthirin • Indomitable • Intrepid (light cruiser) • Iowa • Istanbul • Iwo Jima • Class J • Jupiter • Karekh • Keith • Kethkin • Kiev • K'Kmarak • Kolm-An • Korolev • Larson • Lauro • Laweya • Legacy • Lenthal • Lexington • Liberty • Loki • Loknar • London • Madison • Makin • Mann • Marklin • Marshall • M'Benga • Mediterranean • Merced • Mercury (courier) • Mercury (escort) • Merian • Messier • Meteor • Midway • Mission • Missouri • Mobulai • MoKal • Moscow • Mulciber • Nachthexen • Narcine • Nautilus • Nelson • New Orleans • Niagara • Noble laboratory vessel • Nomad escort • Northampton • Oberon • Odin • Odysseus • Odyssey • Okinawa • Oppenheimer • Orion • Osaka • Ouroboros • Overfield • Paladin battlecruiser • Paladin destroyer • Paladin (24th century) • Perseus • Pioneer • Phalanx • Phantom • Philadelphia • Pinnacle • Piper • Pollux • Portsmith • Pralim • Premonition • Proxima • Pyotr Velikiy • Pyrenees • Rakota • Ranger battlecruiser • Ranger explorer • Ranger scout • Renaissance • Rickenbacker • Rigel • Rochester • Royal Sovereign • Sagittarius • Samson • Sawyer • Scorpio • Scryer • Scylla • Sequoia • Sevaijen • Shepard • ShiKahr • Sierra • Solar • Springfield • Sulek • Surak • Sydney • Tangent • Tempest • Theophrastus • Thomas Paine • Thucydides • Thufir • Tiberius • Ticonderoga • Theseus • Tripper • Tritium • Typhon • Typhoon • Ukora • Ulysses • Ural • Utah • Venture scout • Vigilant scout • Voyager • Wallenberg • Wambundu • Wei-Fa • Wellington • Wilkerson • Wizard • Yamato • Yorkshire • Yorktown • Zodiac • unnamed
general type	Defiant pathfinder • Raging Queen • Sun Tzu • Valley Forge • Federation assault ship • Federation cargo ship • Federation colony ship • Federation construction ship • Federation cruiser • deep galaxy ship • Federation freighter • Federation frigate • Federation galaxy ship • Federation holoship • Federation heavy cruiser (2380s heavy cruiser) • Federation light cruiser (Constitution-variant light cruiser • Intrepid-variant light cruiser) • Federation medium cruiser (Excelsior-variant medium cruiser) • Federation mining freighter • Federation repair ship • Starfleet tanker

Challenger class (deep space explorer)

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