Details to follow
Renumbered from D-4 to fit FASA system.
| Class: | XIX | Year: | 2240 | |
| Ship Source: | Titan Fleetyards | Ship Datasheet: | Coming Soon | |
Details to follow
Renumbered from D-4 to fit FASA system.
| Class: | XIX | Year: | 2240 | |
| Ship Source: | Titan Fleetyards | Ship Datasheet: | Coming Soon | |
The Original intention was for the D-7 to have dorsal mounted Warp engines. Limited production of this variant took place, but trials showed the layout was inferior to the traditional low nacelle layout.
| Class: | TBC | Year: | 2240 | |
| Ship Source: | The Art of Star Trek/ Matt Jeffries | Ship Datasheet: | Coming Soon | |

The Vagabond design shared many concepts with the later Constitution class, they were designed in tandem, but the Vagabond entered service first due to the use of lower risk components in the design, where the Constitution pushed the envelope of many of the technologies. The secondary hull of the Vagabond was tested on the USS Wanderer of the earlier Wayfarer class (also designed by P.T.Riley).
The elongated saucer of the Vagabond was utilised for laboratories and an enhanced planetary sensor suite. In service the Vagabond proved useful, and when pressed into combat was manoueverable and a useful addition to the fleet. However the elongated saucer was found to be prone to stress around the primary hull connector owing to the stresses caused by the propulsion system being dependent on the same connector unlike the configuration of the Wanderer.

Commissioned Ships (include)
The Ranger class originally entered service in 2217, and despite some shortcomings served as Starfleet’s premier heavy cruiser for almost 30 years until the introduction of the Constitution class.
The 2240 Ranger Refit utilised the new secondary hull design for the Constitution class, as well as the upgraded warp drive intended for that class.
Performance of the Ranger Refit was a disappointment as the refit was limited in scope, and further upgrades were cancelled in favour of additional orders for other new build heavy cruisers.

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