And I thought it was a gathering to rank out bad episodes, like the supremely
annoying “A Fistful of Datas”
Scotty was promoted to “Captain of Engineering” in one of the movies.
I thought this thread might deal with ranking the various Trek conventions.
Brian
Okay, I have found screenshots of Q in uniform from various seasons, and he is either wearing four pips or an Admiral’s bar. I have also searched the entire TNG transcript collection, and no reference is ever made to any Commodore.
I withdraw my speculation, my brain was obviously impaired.
I’m vaguely interested in Enterprise ranks too.
And I thought it was a discussion of the Star Trek Conventions that were the most rank. Like when Shatner and Mulgrew started arguing over who had the best hairstyle, and Brooks and Stewart stepped in only to be laughed at. Stewart started an oration about the sexiness of baldness and Brooks was going along until he realized it was all stupid and kicked all their asses! (Bakula arrived late and wondered what happened) 
As I was writing the OP, I considered that the title might cause confusion. Alas, I couldn’t think of another.
I am also interested in how they do the ranks in Enterprise.
I scoured the 'net, intent to prove you wrong but finally found that in TWoK, Scotty was indeed a Captain. I had no clue.
I just checked some images Malcolm Reed and they use a pip system, just like the 24th Century Starfleet. They’re rectangular and on placed right above the horizontal piping that denotes which department you belong to on the right breast.
If Lieutenant Reed is any indication, they use the same basic system as the 24th Century as well, since he only had two pips to denote his rank and both were the same color and shape.
BTW, this rank insignia system is used in the real-life USN today.
An Ensign has one thin stripe on his/her shoulder.
A Leiutenant j.g. has one thin stripe and one thick stripe.
A (full) Leiutenant has two thick stripes.
A Leiutenant Commander has two thick stripes and one thin stripe.
A Commander has three thick stripes.
A Captain has four thick stripes.
Zev Steinhardt
It looks like, from pictures on the Star Trek web site, that they use small silver bars similar to what is used up through the rank of (Navy) Lieutenant today.
Zev, you should also have mentioned that the current day system that you listed is for sleeve or shoulder insignia. Collar insignia is the same as equivalent ranks in the other armed services (e.g., the collar insigina for a captain is an eagle).
For those that are interested, here’s the page on the US Navy website that illustrates various officer rank insignia.
Re: Commodore, I heard at one time (I have no idea if it’s true) that along with its occasional use in the official rank structure, it has also been used as an honorary title. My understanding is that by tradition, any one who commands a ship can be properly called “captain”, no matter what his/her rank. By that same tradition the only one that should be called captain is the one in charge. Therefore, if there is a person with the rank of captain visiting a ship who is not in command, they are addressed as “commodore”. Can anyone who served in the navy either confirm this information or correct it?
AFAIK, Commodore is a title that was originally used to denote a commander of a small fleet put together for a special purpose. The title came up in a discussion of “Pirates of the Caribbean” since it was historically incorrect that the Captain would be getting promoted to Commodore - it wasn’t the next rank in line. He should have received the title only if he was being placed in command of a special force. When the mission was over, his actual rank would remain Captain.
I think that’s the general idea (ack, no pun intended) but I’ll wait to be corrected by someone with more naval experience.