Unnamed Federation cargo shuttles
The following is a list of unnamed Federation cargo shuttles.

Io Facility  

These unnamed cargo shuttles were used by Delta Team to ferry thrusters to the Io Facility spacedock housing the  shortly before the starship was launched in 2259. ()

Starbase Yorktown  

At least two cargo shuttles were used in the construction of the  at Starbase Yorktown starting in 2263. ()

 
Cargo shuttles