Leonov class science vessel

The final class of Terran Deep Space Command science vessels before Terra's space fleet was incorporated into the Stellar Federation Starfleet, the Leonov class ships were an attempt to combine all the best features of the technologies of Federation worlds for an exploration and discovery role.  These ships gave many years of useful service before being prematurely retired due to hull stress fractures and the obsolescence of their propulsion systems.

Starship statistics
Operational service dates: ? – 2320s – 2330s – ?
Complement: ? Length: ? meters Mass: ? tonnes
Max. Speed: ? Max. Cruise Range: ?
Aux. craft:
Vessels of type
* under construction  ◊ proposed or planned  † destroyed or lost  ∴ scrapped  ⇒ converted