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| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | Star Trek Encyclopedia | basic (289 m) Third edition, page 138 |
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| 2 | Speculative | Springfield Class (289 m) Rough Estimate from the deck heights. |
||
| 3 | Speculative | Springfield SWAC (289 m) Rough Estimate from the deck heights. |
| Book : | Star Trek Encyclopedia |
| Comment : | basic (289 m) Third edition, page 138 |
| Source : | Speculative |
| Comment : | Springfield Class (289 m) Rough Estimate from the deck heights. |
| Source : | Speculative |
| Comment : | Springfield SWAC (289 m) Rough Estimate from the deck heights. |
| © Graham & Ian Kennedy | Page views : 115,924 | Last updated : 28 Oct 2003 |
