USS Enterprise NCC-1701 size compared to USS Enterprise NCC-1701-D

Comparison between the version of the USS Enterprise that can be seen in Star Trek TNS, ie the NCC-1701-D, and the version in Star Trek TOS, the first model named NCC-1701.

Object	USS Enterprise NCC-1701	USS Enterprise NCC-1701-D
Type	Spacialship (Class Constitution)	Spacialship (Class Galaxy)
Commandment	James T. Kirk	Jean-Luc Picard
Activity dates	2245 - 2285	2363 - 2371
Crew and passengers	428 crew	1,012 crew
Length	289 m	642 m
Height	73 m	195 m
Width	132 m	463 m
Number of levels	23 decks	42 decks
Mass	6.2 × 108 kg	4.5 × 109 kg
Propulsion	Warp drive, impulse drive.	1,012 crew
Maximum speed	1,024c (Wrap 8)	2,671c (Warp 9.8)
Armament	Phasers, photon torpedoes.	12 phaser arrays, 3 torpedo launchers.
Defense	Deflector shields.	High-capacity deflector shields.

Note: if one of the objects is not visible, it just means that it is too tiny to be displayed compared to the other one.

1c: speed of light.