I've counted one in the secondary hull. I've counted zero, one and maybe two more in the saucer.So, it's Page 32. Great, great thread.
Does the Enterprise have one or two engine rooms?

I've counted one in the secondary hull. I've counted zero, one and maybe two more in the saucer.So, it's Page 32. Great, great thread.
Does the Enterprise have one or two engine rooms?
This could work, but in order for warp drive to propel the TOS "E" independently of what we normally consider the impulse engines at the rear of the saucer section -as we know it can, then there would have to be another set of impulse-like engines in the nacelles and/or the secondary hull.I see the Impulse Engines working in concert with the nacelles for sublight travel; specifically, the subspace field generators in the nacelles can lower the overall mass of the ship (see DS9's Emissary and also the subspace driver coil in the TNG-TM) making it possible for rapid acceleration and speed with only a tiny quantity of fuel.
I've counted one in the secondary hull. I've counted zero, one and maybe two more in the saucer.So far, we've guessed one or three M/AM reactors. We're just as vague as the originally writers.
I think there are at least two engine rooms per Scotty’s line in “The naked Time”. But to really shed some light on the problem we need to disentangle some terms that many are wont to conflate i.e.;
Engineering Deck is not the same as Engineering Section, which in turn is not the same as Engineering Hull.
The term “Engineering Hull” is not a TOS canon term, and “Engineering Section” is not a substitute for it. “Mirror, Mirror”, “Journey To Babel”, and “I Mudd” all indicate in various ways that the Engineering Section is a specific point within the ship and so in no way should it be construed as a large external area such as the Secondary Hull. The closest we come to any canon references to that area of the ship is the occasional references to “lower decks” or “lower levels”.
Among the “lower levels” is to be found the Engineering Deck as per “The Enemy Within”; as well as the Hangar Deck as per “The Omega Glory”, so it’s reasonable to assume that the” lower levels” is a general term referring to those deck/levels in the Secondary Hull, and that therefore the Engineering Deck is in the Secondary Hull.
So far so good, however;
But it is also made abundantly clear in “The Omega Glory” that Kirk is still in the Exeter’s Engineering Section when Spock reports via communicator that he and another crewman are on the “lower levels” thus distinguishing his location within the ship from that of Kirk’s. Furthermore, this episode is the one which features a clip of “an” engineering room, inserted among other stock footage, to represent empty areas of the ship during Kirk’s intercom call to any survivors aboard, and during which, significantly, Kirk reiterates that he is in the Engineering Section. So it is not unreasonable to conclude that there are at least two engine rooms and that one is in the Engineering Section which is not among the lower levels (and thus not in the Secondary Hull), while the other engine room, which is AKA the “Engineering Deck” is located down there.
So if the Engineering Deck is in the lower levels, but the Engineering Section is not in the Secondary Hull then where is the Engineering Section?
In “The Ultimate Computer” we are told that one of the other ships was hit in its Engineering Section, with possible damage to her impulse engines. Therefore it seems clear that the Engineering Section is in the impulse deck, just where TMOST and FJ put it. I know this is an uncomfortable idea for many fans but it fits the factoids we know and requires the least amount of assumptions and hand waving.
That last one could be 2 different hits so it doesn't mean that the engineering section is the aft end of the saucer. In fact,, TMoST specifies the secondary hull is mostly engineering systems so it can rightly be called the engineering section by that source.I think there are at least two engine rooms per Scotty’s line in “The naked Time”. But to really shed some light on the problem we need to disentangle some terms that many are wont to conflate i.e.;
Engineering Deck is not the same as Engineering Section, which in turn is not the same as Engineering Hull.
The term “Engineering Hull” is not a TOS canon term, and “Engineering Section” is not a substitute for it. “Mirror, Mirror”, “Journey To Babel”, and “I Mudd” all indicate in various ways that the Engineering Section is a specific point within the ship and so in no way should it be construed as a large external area such as the Secondary Hull. The closest we come to any canon references to that area of the ship is the occasional references to “lower decks” or “lower levels”.
Among the “lower levels” is to be found the Engineering Deck as per “The Enemy Within”; as well as the Hangar Deck as per “The Omega Glory”, so it’s reasonable to assume that the” lower levels” is a general term referring to those deck/levels in the Secondary Hull, and that therefore the Engineering Deck is in the Secondary Hull.
So far so good, however;
But it is also made abundantly clear in “The Omega Glory” that Kirk is still in the Exeter’s Engineering Section when Spock reports via communicator that he and another crewman are on the “lower levels” thus distinguishing his location within the ship from that of Kirk’s. Furthermore, this episode is the one which features a clip of “an” engineering room, inserted among other stock footage, to represent empty areas of the ship during Kirk’s intercom call to any survivors aboard, and during which, significantly, Kirk reiterates that he is in the Engineering Section. So it is not unreasonable to conclude that there are at least two engine rooms and that one is in the Engineering Section which is not among the lower levels (and thus not in the Secondary Hull), while the other engine room, which is AKA the “Engineering Deck” is located down there.
So if the Engineering Deck is in the lower levels, but the Engineering Section is not in the Secondary Hull then where is the Engineering Section?
In “The Ultimate Computer” we are told that one of the other ships was hit in its Engineering Section, with possible damage to her impulse engines. Therefore it seems clear that the Engineering Section is in the impulse deck, just where TMOST and FJ put it. I know this is an uncomfortable idea for many fans but it fits the factoids we know and requires the least amount of assumptions and hand waving.
Why would Impulse Engines in the nacelles be required? Just generate a low level warp field to move the ship at STL speeds in those instances where the Impulse Engines are off line (or the saucer has detached).This could work, but in order for warp drive to propel the TOS "E" independently of what we normally consider the impulse engines at the rear of the saucer section -as we know it can, then there would have to be another set of impulse-like engines in the nacelles and/or the secondary hull.
Exactly my thinking. I'd like to throw TWOK into the mix as well, as the warp drive (nacelles) were offline and their speed when fleeing the Reliant at the end was incredibly slow.As far as a tiny quantity of fuel normally being used, it would follow that without the subspace field, a much larger quantity of fuel would be necessary, so perhaps this explains what happened in both "Mud's Women" and "The Doomsday Machine" when warp power was not available and running low on impulse engine fuel became a concern?
An excellent summary. And I'm totally up for following the factoids and see what picture they present (although I do have the rest of the franchise nagging in the back of my head...)I think there are at least two engine rooms per Scotty’s line in “The naked Time”. But to really shed some light on the problem we need to disentangle some terms that many are wont to conflate i.e.;
Engineering Deck is not the same as Engineering Section, which in turn is not the same as Engineering Hull.
The term “Engineering Hull” is not a TOS canon term, and “Engineering Section” is not a substitute for it. “Mirror, Mirror”, “Journey To Babel”, and “I Mudd” all indicate in various ways that the Engineering Section is a specific point within the ship and so in no way should it be construed as a large external area such as the Secondary Hull. The closest we come to any canon references to that area of the ship is the occasional references to “lower decks” or “lower levels”.
Among the “lower levels” is to be found the Engineering Deck as per “The Enemy Within”; as well as the Hangar Deck as per “The Omega Glory”, so it’s reasonable to assume that the” lower levels” is a general term referring to those deck/levels in the Secondary Hull, and that therefore the Engineering Deck is in the Secondary Hull.
So far so good, however;
But it is also made abundantly clear in “The Omega Glory” that Kirk is still in the Exeter’s Engineering Section when Spock reports via communicator that he and another crewman are on the “lower levels” thus distinguishing his location within the ship from that of Kirk’s. Furthermore, this episode is the one which features a clip of “an” engineering room, inserted among other stock footage, to represent empty areas of the ship during Kirk’s intercom call to any survivors aboard, and during which, significantly, Kirk reiterates that he is in the Engineering Section. So it is not unreasonable to conclude that there are at least two engine rooms and that one is in the Engineering Section which is not among the lower levels (and thus not in the Secondary Hull), while the other engine room, which is AKA the “Engineering Deck” is located down there.
So if the Engineering Deck is in the lower levels, but the Engineering Section is not in the Secondary Hull then where is the Engineering Section?
In “The Ultimate Computer” we are told that one of the other ships was hit in its Engineering Section, with possible damage to her impulse engines. Therefore it seems clear that the Engineering Section is in the impulse deck, just where TMOST and FJ put it. I know this is an uncomfortable idea for many fans but it fits the factoids we know and requires the least amount of assumptions and hand waving.
The way Scott words the phrase makes it sound more like different departments or teams will get to work on the circuits...which isn't actually a problem either, since we see at least one other Engineering dept (in The Alternative Factor) and that could easily be called it's own sectionA little minor bit: there are more than one engineering sections on the Enterprise.
From the "Apple":
SCOTT: I'll have all engineering sections working on the circuits immediately.
I always liked the more classic science-fictiony "stardrive section", a term that was still in use as late as Encounter At FarpointThat last one could be 2 different hits so it doesn't mean that the engineering section is the aft end of the saucer. In fact,, TMoST specifies the secondary hull is mostly engineering systems so it can rightly be called the engineering section by that source.
On point one, how do we know the Exeter has two identical engine rooms?Going back to my original engine room research, here are key data points:
My conclusion: there are two engineering control rooms, one in each hull. Both are identical in design. The EMM control functions are not identical rather more dedicated to specific functions.
- The Exeter absolutely had two identical engine rooms.
- The Naked Time has a curved corridor leading to the labelled, "Engineering Control Room" suggesting the saucer location.
- The Ultimate Computer had a side turbolift entry plus a long curving corridor leading to an engine room labelled, "Engineering Section" suggesting the saucer location.
- My earlier EMM data showed two different distingue functions (warp engine/power control and transporter control) which suggests two different functional areas on the ship (warp engine control in an undefined location and transporter control in an undefined location).
- The pinwheel entity leaves an engine room then exits the forward starboard secondary hull suggesting this engine room is in the secondary hull (no tripping down the elevator shaft).
Because while Kirk stands in one Engine Room, hailing the empty ship we see a shot of an Engine Room that has no Kirk and no desk with the communications console that he is using. It's also distinctly absent of McCoy and the empty uniforms! The scene then switches back to the initial Engine Room which still has all those things.On point one, how do we know the Exeter has two identical engine rooms?
This falls into the area of personal interpretation of on-screen events though and how literally you would like to view them.Another, the set as built did not have any length of straight corridor to speak of (they had two short sections) so that is more indicative of the limitations of the set rather than where in the ship anything is supposed to be located.
Why would Impulse Engines in the nacelles be required? Just generate a low level warp field to move the ship at STL speeds in those instances where the Impulse Engines are off line (or the saucer has detached).
I think there are at least two engine rooms per Scotty’s line in “The naked Time”. But to really shed some light on the problem we need to disentangle some terms that many are wont to conflate i.e.;
Engineering Deck is not the same as Engineering Section, which in turn is not the same as Engineering Hull.
The term “Engineering Hull” is not a TOS canon term, and “Engineering Section” is not a substitute for it. “Mirror, Mirror”, “Journey To Babel”, and “I Mudd” all indicate in various ways that the Engineering Section is a specific point within the ship and so in no way should it be construed as a large external area such as the Secondary Hull. The closest we come to any canon references to that area of the ship is the occasional references to “lower decks” or “lower levels”.
Among the “lower levels” is to be found the Engineering Deck as per “The Enemy Within”; as well as the Hangar Deck as per “The Omega Glory”, so it’s reasonable to assume that the” lower levels” is a general term referring to those deck/levels in the Secondary Hull, and that therefore the Engineering Deck is in the Secondary Hull.
So far so good, however;
But it is also made abundantly clear in “The Omega Glory” that Kirk is still in the Exeter’s Engineering Section when Spock reports via communicator that he and another crewman are on the “lower levels” thus distinguishing his location within the ship from that of Kirk’s. Furthermore, this episode is the one which features a clip of “an” engineering room, inserted among other stock footage, to represent empty areas of the ship during Kirk’s intercom call to any survivors aboard, and during which, significantly, Kirk reiterates that he is in the Engineering Section. So it is not unreasonable to conclude that there are at least two engine rooms and that one is in the Engineering Section which is not among the lower levels (and thus not in the Secondary Hull), while the other engine room, which is AKA the “Engineering Deck” is located down there.
So if the Engineering Deck is in the lower levels, but the Engineering Section is not in the Secondary Hull then where is the Engineering Section?
In “The Ultimate Computer” we are told that one of the other ships was hit in its Engineering Section, with possible damage to her impulse engines. Therefore it seems clear that the Engineering Section is in the impulse deck, just where TMOST and FJ put it. I know this is an uncomfortable idea for many fans but it fits the factoids we know and requires the least amount of assumptions and hand waving.
Although Kang being a stranger to the Enterprise he probably just assumed it is the engineering section and it's just the Engineering Deck or a secondary engineering section on the Engineering Deck
KANG: I have captured your engineering section. I now control this ship's power and life-support systems.
Nah.Here's a weird idea: What if the saucer decks are numbered top-down starting at 1, but the engineering decks are labeled bottom-top, starting with 1. Then, the Engine Room would be seven decks up from the bottom of the ship, with the Auxiliary Control Room on the level just one deck above. There'd be some way of differentiating the two that the characters omit when they know what all the others are talking about.
Well, that was a clear statement of opinionNah.
Deck 7 was never specifically mentioned as the location of the engineering control room in Day of the Dove, so, you have no need to try and force it to be a deck numbered 7. Also, counting up from the bottom, seven decks puts you fairly high up in the secondary hull, too high.Well, that was a clear statement of opinionI'm not in love with that deck numbering idea either, but would you care elaborate why you feel that way? I'd welcome a canon reason to rule it out so that I don't have to consider it further.
Possibly, but consider this. Deck Seven was the location in "The Doomsday Machine" from which failure in the main energizer was reported, so it's reasonable to conclude that Deck Seven is the location for one of the engine rooms, which agrees with TMOST.Deck 7 was never specifically mentioned as the location of the engineering control room in Day of the Dove, so, you have no need to try and force it to be a deck numbered 7. Also, counting up from the bottom, seven decks puts you fairly high up in the secondary hull, too high.
The problem with Deck 7 is that you have to have the 11 decks in the saucer and Sickbay and the Transporters are on Deck 7. It becomes a very crowded deck. There is no room where Franz Joseph put it to actually have a 2 story engine room. There is no space before the bottom of the saucer curves up. It would have to be forward of that curve in the outside hull. That actually puts Engineering as close to sickbay and the Transporter room as they were on set. Something to think about but something I rejected. I favor 2 engine rooms with the season 1 room being in the saucer and the season 2/3 room being in the secondary hull (just about in the middle).
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