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Lt. Commander
Join Date: Dec 2007
Posts: 120
# 7
06-14-2011, 09:53 AM
Just as a small note, the scaling of the Defiant is not incorrect in-game. The scaling of the Defiant varies from episode to episode. Memory Alpha explains it in detail:

Originally Posted by Memory Alpha
According to Hutzel, during the early development stages of the ship, the Defiant was to be "a new hot battleship that would really set a new standard for an action ship in the series. First, there was lots of talk like 'How big is the Defiant?' Well, we'll make it really small and really powerful, that it would be so powerful and scary, nobody would mess with it." (USS Defiant, DS9 Season 3 DVD special features)
According to Doug Drexler, "The size of the Defiant was a hot potato from day one. Rick Berman wanted a small pocket battleship (a couple times longer than a runabout, with the girth of a regular starship), Gary wanted at least 500' [152.4 m]." [4]

The scale of the CGI mesh, according to a post in the newsgroup nntp://, by DS9 Visual Effects Supervisor David Stipes, was 560' (170.7 m), the length used when he blocked shots in DS9. This was also the size established in the DS9 Technical Manual.

MSD depicting early design for the Defiant-class
The original MSD that appeared in "The Search, Part I" actually depicted an early concept design and did not represent the final product. It was later replaced with an accurate MSD in such episodes as "Shattered Mirror", although it was used on displays until the end of Deep Space Nine. Drexler, who was responsible for creating the ship's MSD, rationalized "a 420′ [128.0 m] Defiant." [5]
For further analysis on the Defiant's scaling, visit the "Defiant Problems" link at Ex Astris Scientia below.

The following details and specifications comes exclusively from the Star Trek: Deep Space Nine Technical Manual:
Production Base: ASDB Integration Facility, Antares Fleet Yards, Antares IV
Type: Escort
Accommodation: 40 officers and crew; 150 personal evacuation limit
Power Plant: One 1,500 plus Cochrane warp core feeding two nacelles; two impulse modules
Dimensions: Length, 170.68 meters; beam, 134.11 meters; height: 30.1 meters
Mass: 355,000 metric tonnes
Performance: Warp 9.982 for 12 hours
Armament: Four pulse phaser cannons; two torpedo launchers
So depending on where you look, it can be 128m, 152m, or 170m. STO (and apparently CBS) decided to use the middle number.