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| Canon source | Backstage source | Novel source | DITL speculation | 
| # | Series | Season | Source | Comment | 
| 1 | Speculative | (309 m) Estimated by comparing the length to the distance between the two rows of windows on the hull. | ||
| 2 | Star Trek Encyclopedia | Constitution Class - refit (305 m) Third edition, page 138 | ||
| 3 | Speculative | Prometheus Bottom (303.2 m) Scaled to match the diagram of the full ship. | 
| Source : | Speculative | 
| Comment : | (309 m) Estimated by comparing the length to the distance between the two rows of windows on the hull. | 
| Book : | Star Trek Encyclopedia | 
| Comment : | Constitution Class - refit (305 m) Third edition, page 138 | 
| Source : | Speculative | 
| Comment : | Prometheus Bottom (303.2 m) Scaled to match the diagram of the full ship. | 
| © Graham & Ian Kennedy | Page views : 19,146 | Last updated : 28 Oct 2003 |