The Star Trek Online website once upon a time had a "ships" page which had a write-up about the various ships in-game and had a few picture of the ships from different angles.
If I remember rightly, I used one of the side-ways-on photos and drew over the top in Photoshop with the line tools and then morphed it as nick said to become and S and F while still maintaining the look of the ship as best as I could.
Honestly though I don't remember what ship it was that I took the picture from but it certainly wasn't that one. That is a sexy ship tho!