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| Canon source | Backstage source | Novel source | DITL speculation | 
| # | Series | Season | Source | Comment | 
| 1 | Star Trek Chronology | (526 m) Stated on page 138 | ||
| 2 | Speculative | Shepard Class (505.5 m) | ||
| 3 | Speculative | Sheliak Ship (500 m) Approximation, based on visual comparison of the Enterprise-D and Sheliak ship in 'The Ensigns of Command'. | 
| Book : | Star Trek Chronology | 
| Comment : | (526 m) Stated on page 138 | 
| Source : | Speculative | 
| Comment : | Shepard Class (505.5 m) | 
| Source : | Speculative | 
| Comment : | Sheliak Ship (500 m) Approximation, based on visual comparison of the Enterprise-D and Sheliak ship in 'The Ensigns of Command'. | 
| © Graham & Ian Kennedy | Page views : 77,158 | Last updated : 28 Oct 2003 |