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Other Starfleet Ship Classes

Starfleet A-K - Starfleet L-Z - Uncertain Starfleet Class - Unknown Starfleet Class

 

Uncertain Starfleet Class

These are several ship classes whose existence is not undeniably proven. Among them are vessels that were seen as desktop models or on computer screens, that were featured in an alternative timeline, or that were only depicted in the DS9 Technical Manual (analysis here). Several more unidentified vessels were visible in TNG: "Best of Both Worlds" and TNG: "Unification". Go here for a detailed analysis.


Ambassador prototype
General description
It is likely that this ship type exists as a variant to the Ambassador class or as a class of its own.

Article: Ambassador Class Variants
Article: Enterprise Lineages on Display
Known ships
No name or registry given
  Annotations
1) Andrew Probert's original design for the Ambassador class is a more obvious intermediate step between Excelsior and Galaxy than the now commonly known version built by Greg Jein. Although it has falsely been labeled as an "early Enterprise-D sketch", the Probert Ambassador was always meant to become a regular "guest ship" on TNG, besides representing the Enterprise-C on the Enterprise-D's ship wall. But all of this Ambassador's scheduled appearances in early TNG were canceled and the existing Excelsior model was used instead of that.
2) The only appearance of the Probert Ambassador is on the ship wall in the conference lounge of the Enterprise-D. We know that the actual Enterprise-C (TNG: "Yesterday's Enterprise") is a Sternbach/Jein design with a tubular secondary hull as the most significant change. But just like with the Enterprise-B too (which was an Excelsior model modified for "Generations") the artist who made the ship wall may have erroneously picked the wrong class variant, rather than completely making up a design. Thus, there is a fair chance that some of the Ambassadors that were not on screen are actually the Probert variant. Provided that it is an Ambassador variant at all, seeing how the saucer barely resembles the one of the Ambassador and the nacelles have different proportions.
Class specifications
None available

 


Bradford type
General description
The Bradford is a cargo vessel carrying two large tubular cargo pods.
Article: The DS9TM Kitbashes
Known ships
USS Bradford
  Annotations
Adam Buckner built this ship model for DS9. It consists of a Miranda saucer, with two Intrepid pylons and two nacelles on top and two Saturn V rockets as cargo pods. The Bradford was sitting on producer Peter Lauritson's desk and probably didn't make it to the screen. 
Class specifications
Length: 266m

 


Cargo hauler
General description
This may be a container hauler for use in orbit and possibly in interstellar space too.
Known ships
No name or registry given
  Annotations
Something that looks like containers with Constitution-type warp nacelles attached to it can be seen in Earth Spacedock in "Star Trek III", close to the central core.
Class specifications
None available

 


Constitution variant 1
General description
This ship is composed of
Constitution-class components. The engineering hull is omitted, and the two warp nacelles are turned upside down and directly connected to the "neck".
Article: The DS9TM Kitbashes
Gallery: Various Starfleet Vessels
Known ships
No name or registry given
  Annotations
1) This kitbashed ship is depicted in the DS9 Technical Manual, however, it has not yet been identified on screen. The schematic accurately reproduces the look of the model. There are two nacelles, and they are attached to short pylons, close to one another. The model does not have a name or registry.
2) It is odd that this ship is obviously in service by 2374, while the original Constitution class may have been decommissioned some 75 years earlier. Still, it is the only consistent image among the six new ship designs presented in the above book.
Class specifications
Length: 235m

 


Constitution variant 2
General description
This class looks like a modified version of the
Constitution refit, with nacelles turned by 90° and additional large hatches in the saucer edge.
Known ships
No name or registry given
  Annotations
1) A model like this was seen in Leah Brahms' office in TNG: "Booby Trap". There is no evidence whether such a ship is actually meant to exist, or if it was only a failed attempt to build a model of the Constitution class - maybe Leah had the same hobby as Picard and O'Brien when she was a child. Whoever built this model in the 20th century didn't have much trouble to change the nacelle orientation. The additional (shuttlebay?) hatches are actually the missing window insets of the AMT model!
2) A still different slight variant had previously appeared in TNG: "The Neutral Zone", here with the nacelle top sides facing outward and the rear end facing forward.
Class specifications
Length: 305m

 


Deuterium tanker
General description
This ship type might be a deuterium fuel carrier.
Known ships
No name or registry given
  Annotations
The ship can be briefly spotted on a computer screen in TNG: "Conspiracy" and was identified as the FASA design of a Federation tanker. The FASA manual states that the infamous Kobayashi Maru was modeled after this design. The only familiar design element is the Constitution-refit nacelle, but this detail is hardly identifiable. In the "real" (canon) world, the ship could be an alien design as well, given its overall strange shape.
Class specifications
None available

 


Excelsior variant 1
General description
Nothing is known about this ship that is composed of
Excelsior-class components and large warp nacelles resembling those of the Constitution class.
Article: The DS9TM Kitbashes
Known ships
Raging Queen NCC-42284
  Annotations
1) This is a variant of the ship we know as USS Curry from DS9: "A Time to Stand". It is depicted in
the DS9 Technical Manual as an unnamed Excelsior-Constitution variant. The nacelles, compared to the Curry, are turned by 90 degrees, and they are attached to the saucer with a pair of larger and one of smaller pylons, the latter running into the impulse engine housing. As opposed to USS Curry NCC-42254, the ship is labeled as "Raging Queen NCC-42284" (without "USS"!).
2) The Raging Queen is probably a different model than the Curry, as it seems unlikely that the already ugly ship was further modified, only to be inserted into the far background of a scene. The Raging Queen may have been visible as a background ship in the same scene in which the Curry appeared.
3) Strangely, there seems to be no connection at all between saucer and engineering hull, and the bow shuttlebay and the second pair of pylons is missing in the official DS9TM image.
Class specifications
Length: 354m

 


Excelsior variant 2
General description
Nothing is known about this strange ship class that incorporates several
Excelsior-class components.
Article: The DS9TM Kitbashes
Known ships
No name or registry given
  Annotations
This extremely ugly kitbashed starship (unofficial nickname: "Medusa" class) is depicted in the DS9 Technical Manual. It has not been sighted yet, and we may still hope that this will never happen. There are two nacelles attached to an Excelsior pylon assembly and one nacelle on a double oversized Constitution pylon. Compared to the official diagram, I have corrected the relative sizes of the nacelles and the saucer, as well as the location of the lower pylon. I have also taken into account that the upper saucer is one of the Enterprise-B and that two complete upper saucer halves with their rims are glued together. In addition, it seems the DS9TM pic was depicted upside down. The two nacelles seem to be actually on top. The model has no name or registry.
Class specifications
Length: 380m

 


Excelsior study II
General description
Nothing is known about this starship class whose construction seems to date back to the beginning of the 24th century or earlier.

Article: Wolf 359 - Other Ships
Known ships
No name or registry given
  Annotations
This is one of five study models for the Excelsior, built in the course of the pre-production of "Star Trek III". The model may have appeared on screen in TNG: "Best of Both Worlds" or "Unification". Unlike the presumed first version, Excelsior study I, this prototype is already close to the final Excelsior. It may be a member of the same ship family, but probably doesn't predate the Excelsior.
Class specifications
None available

 


Excelsior study III
General description
This ship is a variant or a preliminary design of the Excelsior class.

Article: Wolf 359 - Other Ships
Known ships
No name or registry given
  Annotations
1) This third of the two-nacelled Excelsior study models is so close to the final Excelsior that the real ship may be at most a slight variant of the class. The proportions are overall so similar that one would have to take a ruler to notice any difference. Only some details like the bridge and the rear shuttlebay establish a distinct appearance. The remaining differences must be attributed to the rather coarse finish of the study model, like the primitive looking deflector dish (essentially only a hole with putty in it) and the hand-drawn markings.
2) This study model is listed as "uncertain" because it has not been spotted yet. It is absolutely possible that it was mistaken for a standard Excelsior if it was on screen.
3) Star Trek: The Magazine calls the Excelsior study model III the "final study model" that was chosen by Leonard Nimoy. But its dorsal, fore and aft views are depicted along with the side view of the study model II (above). These two miniatures are unquestionably different, as the nacelles and the shape of the saucer don't match at all. Maybe the study model III retained the engineering hull from version II though.
Class specifications
Length: 467m

 


Four-nacelled Defiant pathfinder
General description
While the original two-nacelled Defiant pathfinder design was never built, a variant with four engines serves as a fast courier.
Known ships
No name given
  Annotations
The DS9TM doesn't show this ship, but mentions it in Chapter 1.5: "Specialized high-warp courier vehicles can be employed for critical missions and are able to cover the 50.3-light-year distance between the station and the UFP inner perimeter within six days. This is equivalent to Warp 9.92, and is accomplished by using alternating twin matter-antimatter reaction cores and nacelle pairs. A modified four-engine version of the Defiant pathfinder spaceframe has proven successful in surpassing the 1,000 light-year/year efficiency barrier."
Class specifications
Courier
Max. speed: Warp 9.92 (cruise)

 


Galaxy AGT variant
General description
This variant of the Galaxy class has three nacelles and a phaser cannon mounted to the ventral saucer.

Galaxy Gallery
Known ships
USS Enterprise NCC-1701-D
  Annotations
The three-nacelled USS Enterprise NCC-1701-D appeared in Q's version of the year 2385 in TNG: "All Good Things". Whilst the Enterprise herself didn't survive until then in our present timeline, it is still debatable whether other ships of the class were modified accordingly. At least the USS Challenger in VOY: "Timeless" wasn't. My personal opinion is that the class variant doesn't exist and that the ship's odd appearance was only a fancy of Q. I just don't believe that Starfleet would turn a graceful design like the Galaxy class into such a pompous übership. The Warp 13 top speed of the Enterprise and other ships of the time may be either another joke, or it points to a recalibration of the warp scale.
Class specifications
Length: 642m
Max. speed: Warp 13

 


Intrepid variant
General description
This starship is obviously another Intrepid variant (besides the Yeager class).
Article: The DS9TM Kitbashes
Gallery: Various Starfleet Vessels
Known ships
USS Elkins NCC-74121
  Annotations
1) The design was depicted in the DS9 Technical Manual (there nameless, see uncorrected official image). It has not been confirmed on screen so far, but may have appeared in the background of the opening scene in DS9: "A Time to Stand". The Constitution-type warp engines on the image are significantly oversized and Danube-class(!) pylons are employed. The engineering section consists of two nearly complete hulls of a 1/32 scale F-14 model! Unfortunately, the image is how the model actually looks like. The name Elkins comes from Judy Elkins, VFX coordinator on DS9 and animator for "Star Trek II".
2) Until recently it seemed very likely that the image was just inaccurate and was actually supposed to depict the Voyager study model built by Rick Sternbach which has the same overall structure with a pointed saucer, Danube-class nacelle struts and angular nacelles. It is still possible that the actual model was inspired from it, but now the well-conceived Voyager prototype sadly belongs into the non-canon realm, while we're stuck with yet another bad kitbash.
Class specifications
Length: 360m

 


Provider
General description
This might be a modular cargo ship.
Known ships
No name or registry given
  Annotations
We can have a glimpse of this ship on a computer screen in TNG: "Conspiracy". It was identified as a design named "Provider class" from the Spaceflight Chronology. In the "real" (canon) world, the ship could be an alien design as well, given its overall strange shape.
Class specifications
None available

 


Ptolemy
General description
This ship type consists of a Constitution-type saucer, a tow pad and two nacelles.
Article: Spotting the Ships from the Star Fleet Technical Manual
Known ships
No name or registry given
  Annotations
The class name "Ptolemy", the design and its function as a tug are from the non-canon Star Fleet Technical Manual, none of which is officially confirmed. The reason why the ship type is listed here is that it briefly appeared on a computer screen in "Star Trek II", so in canon Trek it might be anything from an actually built ship to a never realized design sketch.
Class specifications
Length: 225m

 


Saladin/Hermes
General description
This ship type consists of a Constitution-type saucer and a single nacelle.
Article: Spotting the Ships from the Star Fleet Technical Manual
Known ships
No name or registry given
  Annotations
The Saladin and Hermes are two nearly identical single-nacelled ship types from the non-canon Star Fleet Technical Manual; neither the design nor any of the two class names is officially confirmed. The reason why they are listed here is that both of them briefly appeared on a computer screen in "Star Trek II", so in canon Trek it might be anything from an actually built ship to a never realized design sketch.
Class specifications
Length: 246m

 


Yellowstone
General description
The appearance of this new type of runabout is substantially identical to the
Danube class, but it has a newly developed tetryon plasma warp drive.
Known ships
USS Yellowstone NX-74751
  Annotations
The Yellowstone-class runabout was featured in VOY: "Non Sequitur", and designed in a parallel reality by Harry Kim who was a starship construction engineer instead of a Voyager crew member. It is not known whether the starship has also been developed in "our" reality without Harry's assistance. However, at least in our reality there is a name conflict with the Sequoia-class USS Yellowstone.
Class specifications
Length: 23m

 

Unknown Starfleet Class

The following ships were mentioned in dialogue or were listed on displays, particularly the ones from "Star Trek VI", TNG: "Conspiracy", TNG: "Eye of the Beholder" and DS9: "Whispers".

USS Ahwahnee NCC-2048, shown on a display in "Star Trek VI"

USS Albert Einstein NCC-85183, commanded by Capt. Layne Friedman, appeared on a display in TNG: "Conspiracy"
The ship appears to have the same registry as the USS John F. Kennedy, so one of the two must be rated as an error.

USS Aleo NCC-1981, commanded by Capt. Bryan D. Furen, appeared on a display in TNG: "Conspiracy"

USS Amber NCC-21335, listed on the starship deployment status display in TNG: "The Measure of a Man"
We can identify the name in the HD version of the episode. The registry is a good guess.

USS Apollo NCC-30000, listed on the starship deployment status display in TNG: "The Measure of a Man"
We can identify the name in the HD version of the episode. This is not the class ship of the Apollo class, considering that all ships of that class have lower registries.

USS Archer NCC-44278, appeared on a display as part of the "Battle Group Omega" in "Star Trek Nemesis"

USS Atlantis NCC-72007, commanded by Capt. Jana Park, appeared on a display in TNG: "Conspiracy"
A second USS Atlantis NCC-3210 was listed on the deployment status display in TNG: "The Measure of a Man", which is in contradiction to the above ship, unless the newer Atlantis had been destroyed or renamed and the name been given to a very old vessel.

USS Baton Rouge, shown as part of a personnel file (Darien Wallace) in TNG: "Eye of the Beholder"

USS Billings, previous assignment of Kathryn Janeway (VOY: "Night")

USS Bozeman, mentioned in "Star Trek VII" as well as in radio chatter in "Star Trek VIII"
It is possible that the Soyuz-class USS Bozeman NCC-1941 from TNG: "Cause and Effect" still serves in Starfleet, despite being a very old design. One objection is that the Bozeman should have been sent back to the 23rd century. Moreover, Starfleet often re-uses names for starships, so it could be a new ship just as well. Kelsey Grammer, who played Capt. Morgan Bateson of the old Bozeman NCC-1941, is rumored to have contributed an uncredited background voice to "Star Trek VIII", so this could be taken as a broad hint that it was indeed intended to be the old Soyuz class, unless Starfleet had given him a new one with the same name. The rumor may be untrue, though.

USS Callisto, commanded by Capt. Seth Goldberg, appeared on a display in TNG: "Conspiracy"

USS Carolina NCC-160, mentioned in TOS: "Friday's Child"
The on-screen statement that the Daedalus class was decommissioned prior to 2196 (TNG: "Powerplay"), outweighs the suggestion that the USS Carolina may belong to this class as late as 2267. The registry would be perfectly fitting for a Daedalus-class ship, but was made up by Okuda years after the episode. Unfortunately the explanation that, for their hoax, the Klingons may have taken the ship name and number from an old Starfleet database (in which case it could be actually the Daedalus-class USS Carolina NCC-160) needs to be dismissed, as Uhura identified the Carolina as an actual ship being registered in the sector.

USS Carolina, mentioned in VOY: "Inside Man"
With a bit of math, we find out from the dialogue that this Carolina is a rather new ship with a maximum speed of Warp 9.9.

USS Challenger NCC-2032, shown on a display in "Star Trek VI"
This ship is often assumed to be the class ship for the Challenger class. Since the Challenger-class Buran built for BoBW is from the Galaxy era and, moreover, the registries of the three known ships of this class are all in the 57xxx range, this assumption is almost definitely wrong.

USS Chicago, shown as part of a personnel file (Walter J. Pierce) in TNG: "Eye of the Beholder"

USS Clavyn, shown as part of a personnel file (Anaanda Ziff) in TNG: "Eye of the Beholder"

USS Cochrane, listed on an Okudagram as having suffered casualties in the Dominion War
The fact that the vessel fought in the war is a sign that it's probably not the Oberth-class ship of the same name.

USS Columbia NCC-621, scout, mentioned in radio chatter in "Star Trek I"

USS Constellation, mentioned in DS9: "The Abandoned" as the ship supposed to carry the young Jem'Hadar. This is likely the same ship USS Constellation NCC-55817, commanded by Louis Rubenstein, that appeared on a display in TNG: "Conspiracy"
The idea that this might be the 90-100 year old USS Constellation NCC-1974 is questionable, although the Fact Files support it.

USS Copernicus NCC-58637, appeared on a display in TNG: "Conspiracy"

USS Cortéz, mentioned as part of the Federation fleet to retake DS9 ("Favor the Bold"), later destroyed ("Far Beyond the Stars")

USS Destiny, ship to which Ezri Tigan was assigned prior to DS9: "Shadows and Symbols"

USS Discovery, appeared on a display in TNG: "Conspiracy"

USS Donovan, shown as part of a personnel file (Bruno Salvatore) in TNG: "Eye of the Beholder"

USS Elmer Fudd NCC-85343, commanded by Capt. Mary van der Ven, appeared on a display in TNG: "Conspiracy"
We may want to disregard the existence of a so-named ship and imagine we misread what the display shows (that is readable only in HD). The ship has the same registry as the Puget Sound and the Mustang so two of the three must be in error.

USS Emden NCC-1856, shown on a display in "Star Trek VI"
The registry suggests it could be a Miranda class ship.

USS Endeavour NCC-39272, appeared on a display in TNG: "Conspiracy"
A second USS Endeavour NCC-25330 was listed on the deployment status display in TNG: "The Measure of a Man". This
is in contradiction to the above ship, unless the newer Endeavour had been destroyed or renamed and the name been given to an older vessel - only to be replaced by yet another Endeavour NCC-71805 one or two years later!

USS Entente NCC-2120, dreadnought, mentioned in radio chatter in "Star Trek I"
Considering that the idea for the ship was obviously taken from the Star Fleet Technical Manual by Franz Joseph, which was something like canon in those days, it is a nice suggestion that the actual Entente looks like that - a Federation-class dreadnought with three warp nacelles. But whilst the "sister ships" from the book, the Saladin/Hermes and Ptolemy (see above), were all visible in "Star Trek II" and "Star Trek III", soild canon evidence of the existence of the Federation class is missing. More about the SFTM ships in the article Spotting the Ships from the Star Fleet Technical Manual.

USS Equicon NCC-1988, appeared on a display in TNG: "Conspiracy"
Although the name and registry are almost impossible to recognize, they must refer to the Equicon Convention that took place in 1988.

USS Excelsior NCC-21445, mentioned in TNG: "Interface" and listed on the starship deployment status display in TNG: "The Measure of a Man"
We can clearly identify the name in the HD version of "The Measure of a Man". The registry is a good guess.

USS Farragut, mentioned in DS9: "Chrysalis"
There is a discussion whether this Farragut is the Excelsior-class ship shown in the above episode. However, it is improbable that construction of the 90-year-old Excelsior class is continued until 2375 and one ship would inherit the name of the destroyed Nebula-class ship. The second theory is that an Excelsior-class ship could have been renamed to "USS Farragut", but considering Starfleet probably builds hundreds of new ships each year, especially during a war, this (probably unpopular) decision would not have been necessary.

USS Farouk El-Baz NCC-31823, listed on the starship deployment status display in TNG: "The Measure of a Man"
We can clearly identify the name in the HD version of the episode. The registry is a good guess.

USS Gallico, shown on a display in DS9: "Whispers"
This was previously believed to be a "USS Galice" until DVD screen caps became available.

USS Ganymede NCC-18457, commanded by Capt. Darryl Oja, appeared on a display in TNG: "Conspiracy"

USS Gettysburg, mentioned in DS9: "Treachery, Faith, and the Great River"
The old USS Gettysburg NCC-3890 has probably been decommissioned by 2376, like her sister ships of the Constellation class, including the USS Constellation herself.

USS Gremlin NCC-72927, appeared on a display in TNG: "Conspiracy"
We wouldn't really expect a Starfleet ship to be named "Gremlin". Anyway, the captain's name looks like it begins with "Michael J.".

USS Hauck, mentioned in Star Trek: The Magazine (May 2002) as the ship flying in formation with USS Voyager on a test flight at Warp 1.03 in 2371
The article, written by Rick Sternbach, has the status of a technical manual, so the ship is aprocryphal. As the Hauck merely served for "engineering support and emergency backup" at low warp, it could be almost any ship class.

USS Heart of Gold NCC-42, commanded by Capt. Douglas Adams, appeared on a display in TNG: "Conspiracy"
The ship's name, the captain's name and the oddly low registry are of course references to The Hitchhiker's Guide to the Galaxy, just as the fact that the Heart of Gold received orders from Arthur Dent of the Sirius Cybernetics Corporation. Like many facts from the "Conspiracy" displays it should be taken with a grain of salt.

USS Helin NCC-1692, shown on a display in "Star Trek VI"
The registry suggests it could be a Constitution-class ship, but considering the "Constitution inflation", it would be better anything else.

USS Hispaniola, shown on a display in DS9: "Whispers"

USS Hokule'a NCC-31087, listed on the starship deployment status display in TNG: "The Measure of a Man"
We can clearly identify the name in the HD version of the episode. The registry is a good guess. Due to its high registry this is most likely not the lead ship of the Hokule'a class.

USS James Fenimore Cooper NCC-4077, commanded by Benjamin Franklin Pierce, appeared on a display in TNG: "Conspiracy"
The captain's name and the registry are references to M*A*S*H. The name is misspelled "Fennimore" on the actual display, but according to EAS policy the misspelling is ignored.

USS John F. Kennedy NCC-85183, appeared on a display in TNG: "Conspiracy"
The ship appears to have the same registry as the USS Albert Einstein, so one of the two must be rated as an error.

USS John Muir NCC-1732, shown on a display in "Star Trek VI"
The registry suggests it could be a Constitution-class ship, but considering the "Constitution inflation", it would be better anything else.

USS Korolev NCC-2014, shown on a display in "Star Trek VI"
This ship is often assumed to be the class ship for the Korolev class, but this is mere speculation, and the high registry of the USS Goddard does not support it.

USS Liberator NCC-67016, damaged shuttle with this number depicted in The Art of Star Trek, was at Wolf 359 (TNG: "Best of Both Worlds")

USS Malone, shown as part of a personnel file (Anaanda Ziff) in TNG: "Eye of the Beholder"

USS Manson, mentioned in radio chatter in "Star Trek VIII"

USS Matte Fringe NCC-12898, commanded by Capt. Rob Legato, appeared on a display in TNG: "Conspiracy"
Rob Legato worked as a visual effects coordinator. He is said to have received orders from Admiral Daniel Curry (his colleague on TNG) on the display.

USS Max Planck NCC-28573, commanded by Capt. Asenath Hammond, appeared on a display in TNG: "Conspiracy"
The name is misspelled "Plank" on the actual display, but according to EAS policy the misspelling is ignored.

USS Mayflower, cargo label depicted in the DS9TM, could be glimpsed in DS9: "The Abandoned", but was not readable there

USS Minnow NCC-19585, commanded by Capt. Jonas Grumby, appeared on a display in TNG: "Conspiracy"
The names of the ship and her captain are references to Gilligan's Island. The ship has the same registry as the Tranquility Base, so one of the two must be in error.

USS Musashi, mentioned in DS9: "Treachery, Faith, and the Great River"

USS Mustang NCC-85343, commanded by Capt. Jimmy Arakaki, appeared on a display in TNG: "Conspiracy"
The ship has the same registry as the Puget Sound and the Elmer Fudd, so two of the three must be in error.

USS Neil Armstrong NCC-31806, listed on the starship deployment status display in TNG: "The Measure of a Man"
We can clearly identify the name in the HD version of the episode. The registry is a good guess.

USS Niels Bohr, shown as part of a personnel file (Bruno Salvatore) in TNG: "Eye of the Beholder"

USS Nightwing NCC-8342, commanded by Capt. Herman Zimmerman, appeared on a display in TNG: "Conspiracy"

USS Non Sequitur NCC-12999, commanded by Capt. Sandy Fries, appeared on a display in TNG: "Conspiracy"
Another very odd name for a ship that we must take with a grain of salt. Sandy Fries worked as a screenwriter for TNG ("Coming of Age").

USS Northridge, shown as part of a personnel file (Lois A. Eckridge) in TNG: "Eye of the Beholder"

USS Nova NCC-73515, appeared on a display as part of the "Battle Group Omega" in "Star Trek Nemesis"
This could be the prototype ship of the Nova class, but its registry is higher than those of the Equinox and the Rhode Island. On the other hand, it is too low for a ship newly commissioned during the Dominion War as a replacement for a presumably destroyed ship of the same name. Maybe we should just accept it as the Nova prototype and as another registry oddity.

USS Olympia, found crashed in DS9: "Sound of Her Voice"

USS Omaha, Nebraska NCC-5252, commanded by Capt. Sandy Veneziano, appeared on a display in TNG: "Conspiracy"
Sandy Veneziano was an art director for TNG. The name of the ship as visible on the screen does not include a comma, which I rate as an error to be disregarded.

USS Oregon, shown on a display in DS9: "Whispers"

USS Orion, ship on which Kieran MacDuff served as operations manager, only listed in the remastered episode TNG-R: "Conundrum"
While Kieran MacDuff (spelling according to the remastered episode) is not real, it is well possible that the USS Orion exists.

USS Peterson, shown as part of a personnel file (Anaanda Ziff) in TNG: "Eye of the Beholder"

USS Philadelphia, shown as part of a personnel file (Alfonse D. Pacelli) in TNG: "Eye of the Beholder"

USS Pueblo, shown as part of a personnel file (Daniel L. Kwan) in TNG: "Eye of the Beholder"

USS Puget Sound NCC-85343, commanded by Capt. Carl L. Thomas, appeared on a display in TNG: "Conspiracy"
The ship has the same registry as the Mustang and the Elmer Fudd, so two of the three must be in error.

USS Republic, old cadet training ship, mentioned in DS9: "Valiant"
Fundamentally, it would be a nice idea to use the USS Republic NCC-1371 (over 120 years old) as a cadet ship, but Picard told Scotty in TNG: "Relics" that there is a Constitution-class ship in the Fleet Museum, as if this were the only one left. If there had been a Constitution-class training ship, he would have said something like "One of them is still in service". If Picard, however, specifically meant to refer to the ship in the museum as the only surviving Constitution in its original configuration (reason here), the Republic might be one of the refitted ships.

USS Revere NCC-595, scout, mentioned in radio chatter in "Star Trek I"

USS Robert Louis Stevenson NCC-1281, commanded by Diana Giddings, appeared on a display in TNG: "Conspiracy"

USS Saratoga, mentioned in DS9: "Wrongs Darker than Death or Night"

USS Sarek, mentioned as part of the Federation fleet to retake Deep Space 9 in "Favor the Bold"

USS Scovil NCC-1598, shown on a display in "Star Trek VI"

USS Seaquest, shown as part of a personnel file (Darien Wallace) in TNG: "Eye of the Beholder"
This is a reference to the TV series seaQuest DSV.

USS Seaview, shown as part of a personnel file (Daniel L. Kwan) in TNG: "Eye of the Beholder"
Seaview is the name of the submarine in the TV show Voyage to the Bottom of the Sea.

USS Sentinel, mentioned in DS9: "Treachery, Faith, and the Great River"

USS Shepard, disabled by the alien probe in "Star Trek IV", was only in the script, according to the Encyclopedia III

USS Sherlock Holmes, appeared on a display in TNG: "Conspiracy"

USS Shika Maru, mentioned in TNG: "Darmok"

USS Silversides, shown as part of a personnel file (Marla E. Finn) in TNG: "Eye of the Beholder"

USS Springfield NCC-1963, shown on a display in "Star Trek VI"
This ship is often assumed to be the class ship for the Springfield class, but this is obviously wrong, since the Springfield-class Chekov built for BoBW is a ship from the 24th century, akin to the New Orleans and Cheyenne.

USS Syracuse, shown as part of a personnel file (Alfonse D. Pacelli) in TNG: "Eye of the Beholder"

USS Ticonderoga NCC-87270, appeared on a display in TNG: "Conspiracy"
A ship of this name was also mentioned in a deleted scene in "Star Trek: Insurrection".

USS Titan, future command of Will Riker ("Star Trek Nemesis"), retroactively inserted into TNG-R: "Future Imperfect" as one of Riker's commands in the fake future
The ship's name suggests that the Titan is a capital ship (I wouldn't choose "Titan" for an Oberth class, although "Nova" sounds like something big too and is used for quite a smallish vessel). And Riker says at the end of the movie: "We're heading the new task force in the Neutral Zone." This undoubtedly indicates that it has to be a large ship. The design and class name (Luna class) in the Star Trek Titan book series are non-canon irrespective of their popularity.

USS Tombaugh, assimilated by the Borg 13 years ago (VOY: "Infinite Regress")

USS Tranquility Base NCC-19585, commanded by Capt. Rick Sternbach, appeared on a display in TNG: "Conspiracy"
The ship has the same registry as the Minnow, so one of the two must be in error.

USS Truman, mentioned in DS9: "Field of Fire"

USS Tycho NCC-85103, commanded by Capt. Alan Kobayashi, appeared on a display in TNG: "Conspiracy"

USS Unicorn, appeared on a display in TNG: "Conspiracy"

USS Valiant NCC-1223, destroyed in orbit of Eminiar VII in 2217 (TOS: "A Taste of Armageddon")
The Valiant is obviously not yet another Daedalus-class ship, since all the ships of this class have been decommissioned by 2196.

USS Valiant NCC-75418, appeared on a display as part of the "Battle Group Omega" in "Star Trek Nemesis"

USS Veracruz, mentioned in DS9: "The Siege of AR-558"

USS White Sands NAR-0002, commanded by Capt. G. Harry Stein, appeared on a display in TNG: "Conspiracy"
This is a reference to model rocket pioneer G. Harry Stine, who once worked at the White Sands Proving Grounds.

USS Whorfin NCC-1024, shown on a display in "Star Trek VI"
This ship might be the class ship for the Whorfin class, but there is no evidence Starfleet uses Whorfin-class ships at all, so this is mere speculation. The name is one of many references in Star Trek to Buckaroo Banzai

USS Yorktown NCC-20045, mentioned in VOY: "Flashback" and shown on a display in DS9: "Whispers"
If we assume the USS Yorktown NCC-1717 was renamed to USS Enterprise NCC-1701-A in 2286, there has to be a new USS Yorktown in 2293. The registry comes from the deployment chart in TNG: "The Measure of a Man".

USS Yuri Gagarin NCC-25306, listed on the starship deployment status display in TNG: "The Measure of a Man"
We can clearly identify the name in the HD version of the episode. The registry is a good guess.

(Name unknown) NCC-1685, identified on a wall chart in TOS: "Court-Martial"
The registry suggests it could be a Constitution-class ship, but considering the "Constitution inflation", it would be better anything else.

(Name unknown) NCC-1718, identified on a wall chart in TOS: "Court-Martial"
The registry suggests it could be a Constitution-class ship, but considering the "Constitution inflation", it would be better anything else.

(Name unknown) NCC-1831, identified on a wall chart in TOS: "Court-Martial"
This was previously presumed to be the Constitution-class Intrepid, but in the remastered episode the ship can be seen with NCC-1631, so unless we imagine the chart shows "NC-1631" this has to be another ship..

(Name unknown) NCC-71325, shuttle with this mother ship registry transported Tom Paris to the USS Voyager (VOY: "The Caretaker")

(Name uncertain) NCC-30087, listed on the starship deployment status display in TNG: "The Measure of a Man", commanded by Richard Cronn
This looks like "USS Da-Teplan", but is not definite. The registry is a good guess.

(Name uncertain) NCC-30532, listed on the starship deployment status display in TNG: "The Measure of a Man", commanded by Peter Lauritson
This looks like it ends with "...mo", but is not clearly readable. The registry is a good guess.

(Name uncertain) NCC-31054, listed on the starship deployment status display in TNG: "The Measure of a Man", commanded by Elaina Vescio
This looks like it ends with "...can", but is not clearly readable. The registry is a good guess.

(Name uncertain) NCC-31810, listed on the starship deployment status display in TNG: "The Measure of a Man", commanded by Adele Simmons
This looks like it ends with "...wicker", but is not clearly readable. The registry is a good guess.

(Name uncertain), shown on a display in DS9: "Whispers"
This looks like "USS D'hjty", but is not clearly readable.

(Name uncertain), shown as part of a personnel file (Walter J. Pierce) in TNG: "Eye of the Beholder"
This looks like "USS Emidazu", but is not clearly readable. "Emidazu" sounds Japanese but yields no Google results (except related to the name on the display).

(Name uncertain), shown on a display in DS9: "Whispers"
This looks like "USS G'mat", but is not clearly readable.

(Name uncertain), shown on a display in DS9: "Whispers"
This looks like "USS Min'ow", but is not clearly readable.

(Name uncertain), shown as part of a personnel file (Walter J. Pierce) in TNG: "Eye of the Beholder"
This could be "USS Sullivan", but the last three letters rather look like "...mam" to me.

 


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