For other uses, see Ptolemy.

The Ptolemy-class was a type of Federation starship in service in the 23rd century, classified as a transport/tug. (ST reference: Star Fleet Technical Manual)

This vessel and its class are likely named after Ptolemy.

Development history[]

Used by Starfleet to transport priority military and government cargoes (civilian freighters being adequate for other loads), the tug was a full-fledged starship with limited armament suitable to its role in the fleet. However, since a Ptolemy-class tug cost almost as much as a large cruiser to build, competition between the Front-line and Logistical branches of Starfleet for construction funds was fierce.

The Ptolemy-class could carry up to three cargo pods. If only carrying two, one but not both could be a double-weight pod, and if one was a double-weight pod, it must be the one directly connected to the tug itself, at the front.

Types of pods[]

The pods themselves were towed in-line, one attached to the tug and the others to the pod in front.

The Starliner pod was designed for the transport of 300 personnel. Too expensive to use for colonization, it usually carried relief crews to isolated outposts. The Starliner pod was capable of independent operations at sublight speed.

There were actually several types of Cargo pod (liquid, break-bulk, container, pallet, dry bulk, etc.), but all were functionally identical. There was no crew, only some accessways for members of the tug's crew or the destination base' personnel to oversee loading and unloading.

There was also a Marines pod, used by the Starfleet Marine Corps as a troop transport and barracks.

(From the instruction manual for the video game: Starfleet Command, itself taken from the original Star Fleet Battles source material)

Known vessels[]

Ptolemy-class starships
Ptolemy-subclass	Al Rashid • Anaxagoras • Anaximander • Aristarchus • Copernicus • Eratosthenes • Galilei • Hevelius • Hipparchus • Ibn Daud • Masada • Philolaus • Ptolemy • Pythagoras • Thales • Ulugh Beg
Keppler-subclass	Ambartsumian • Brahe • Cassini • Deslandres • Donati • Flamarion • Keppler • Kidinnu • Leverrier • Luyten • Messier • Newton • Piazzi • Riccioli • Schiaparelli
Doppler-subclass	Airy • Apian • Baade • Bayer • Biela • Bondi • Brouwer • Campell • Carrington • Chamberlain • Chauvenet • Clark • Columbo • Dollfus • Doppler • Dreyer • Eddington • Encke • Fracastor • Galle • Gaillot • Gautier • Goldricke • Hale • Halley • Hayashi • Hencke • Herschell • Hirayami • Holden • Hubbard • Hubble • Humanson • Jansky • Jeffrey • Kaula • Klepstra • Kruger • Kuiper • Laplace • Leavitt • Lockyer • Mitchell • Newcomb • Oort • Palitzsch • Peale • Pickering • Popper • Pritchett • Reber • Rittenhouse • Ross • Sabine • Schmidt • Tombaugh • Toscanelli • Van De Kamp • Vogel • Von Zach • Walker • Wolaston • Wright
Dollond-subclass	Adams • Baum • Bessel • Bode • Carpenter • Challis • Chandrasekher • Delambre • Dollond • Eichelberger • Flamsteed • Frost • Gold • Goldreich • Hall • Henderson • Hertzsprung • Hoyle • Huggins • Irwin • Jeans • Kohlschutter • Lagrange • Lowell • Langley • Moulton • Olbers • Pierce • Plaskett • Pogson • Roques • Russell • Sandage • Schwabe • Shapley • Slipher • Savary • Scheiner • Secchi • Shklovsky • Struve • Swift • Todd • Van de Hulst • Van Maanen • Wolf • Young

Miscellaneous information[]

• Admiral Fitzpatrick kept a model of a Ptolemy-class transport/tug in his office at Starfleet Headquarters in 2273. (TOS comic: "The Haunting of Thallus!")

Appendices[]

Connections[]

Starship classes of the Federation Starfleet
subclass groups	Akira (Alita • Armitage • Thunderchild) • Ambassador (Alaska • Narendra • Yamaguchi) • Apollo (Akula frigate / light cruiser) • Cardenas (Buran) • 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 • Kirk • Crossfield (Glenn • 32nd century refit) • Danube (Yellowstone) • Decatur (Dreadnought) • Defiant (Gallant • Incursion • Nachthexen • Sao Paulo • Valiant • Vigilant escort) • Dervish (Gryphon • Hermes escort • Maelstrom • Tempest) • Destiny (Nimbus • Oracle • Trident) • Engle (Earhart) • Excelsior (Bismarck • Curry • 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) • Hoover (Edison) • Intrepid (Bellerophon • Cochrane science vessel • Discovery (25th century) • Janeway • Pathfinder • Trailblazer • Yeager) • Kumari (Charal • Khyzon) • Luna (Comet • Polaris • Sol • Titan) • Magee (Shran (escort)) • Malachowski (Helios (tug)) • Miranda (Anton • Reliant • Soyuz) • Merian (Merian (dreadnought)) • Nebula (Magellan) • New Orleans (Lafayette) • Nimitz (Europa) • Norway (Oslo) • Nova (Aurora • Quasar • Rhode Island) • NX (Columbia • Poseidon) • Oberth (Clarke • Gagarin (23rd century) • Grissom • Sagan) • Odyssey (Verity • Yorktown (cruiser)) • 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) • Shepard (Gagarin (25th century)) • Solanae (Helios • Montgomery • Omega) • Sovereign (Archon • Imperial • Majestic • Noble cruiser • Regent) • Steamrunner (Appalachia • Zephyr) • Vesta (Aventine • Rademaker) • Walker (Georgiou • Shenzhou ) • Wells (Eternal • Ouroboros • Verne)
other named classes	AA class • Aakenn • Achilles • Advance • Aegian • Aeolus • Aerie • Akula destroyer / escort • Ambassador Hardin • Andes • Andor • Andromeda (24th century) • Angelou • Antares • Apache • Aquarius • Archer • Archimedes • Ark Royal • Ariel • Ascendant • Atrox • Avenger (scout) • Babcock • Bader • Baker • Baton Rouge • Berena • Bode • Bolarus • Bonaventure • Bradbury • Brenton • California • Canada • Canopus • Capella • Castor • Centaur • Centaurus • Ceres • Cestus • Challenger • Chandley • Chariot • Chimer • Chimera fast frigate • Christopher • Clarke (25th century) • Cle Dan • Cochrane transport • Columbia • Condor (raider) • Continent • Contortrix • Copernicus • Courage • Daedalus • Dauntless • Decker • Defender • Delta • D'Kyr • Deneva • Derf • Drexler • Durrett • Eagle • Eclipse • Edward • Einstein • Eisenberg • El Dorado • future Enterprise • Epoch • Epsilon • Erewon • Eternal • Federation • Fenlon • Fermi • Fiji • Freedom • Friendship • Frontier • Gagarin (24th century) • Galen • Gallant • Ganges • Geneva • Genser • Graceful • Grayson • Griffon • Guardian • Gemini • Hale • Hermes fast cruiser • Heston • Hogan • Hokule'a • Horizon cruiser • Icarus • Ilthirin • Indomitable • Intrepid (22nd century) • 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 • Mars • Marshall • M'Benga • Mediterranean • Merced • Mercury (courier) • Mercury (escort) • Mercury (scout) • Merian • Merian (dreadnought) • Messier • Meteor • Midway • Mission • Missouri • Mobulai • MoKal • Moscow • Mulciber• Narcine • Nautilus • Nelson • Niagara • Noble laboratory vessel • Nomad escort • Northampton • Oberon • Odin • Odysseus • Okinawa • Oppenheimer • Orion • Osaka • Overfield • Paladin battlecruiser • Paladin destroyer • Parliament • Paladin (24th century) • Perseus • Pioneer • Phalanx • Phantom • Philadelphia • Pinnacle • Piper • Pollux • Portsmith • Pralim • Premonition • Protostar • Proxima • Pyotr Velikiy • Pyrenees • Rakota • Ranger battlecruiser • Ranger explorer • Ranger scout • Renaissance • Rickenbacker • Rigel • Rochester • Royal Sovereign • Sagittarius • Samson • Saturn • Sawyer • Scorpio • Scryer • Scylla • Sequoia • Sevaijen • ShiKahr • Sierra • Solar • Springfield • Sulek • Surak • Sydney • Tangent • Theophrastus • Thomas Paine • Thucydides • Thufir • Tiberius • Ticonderoga • Universe •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 battleship • Federation cargo ship • Federation colony ship • Federation construction ship • Federation cruiser • deep galaxy ship • Federation dreadnought • 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

Appearances[]

• Star Fleet Technical Manual (TOS technical manual) (first appearance)
• 25th Anniversary (TOS video game)
• Declassified (VAN novel)

External links[]

• Ptolemy class article at Memory Alpha, the wiki for canon Star Trek.