Valakian sublight ship

The Valakian sublight ship was a spacecraft type in use by the pre-warp civilization of the Valakianss in the mid-22nd century. Valakian space shuttles had a complement of two and could operate independently for at least one year. Limited to sublight speeds, it took a space shuttle longer than one year to travel less than one lightyear. 

History
Between September and October 2151, the United Earth starship Enterprise) found a Valakian shuttle less than one lightyear from Valakis. Its two occupants suffered from a plague slowly extinguishing their species. The shuttle's mission was to seek medical aid in combating the plague from warp-capable species. Enterprise returned the astronauts to Valakis.