Utility Ship
Concept · Empire · Stellaris 4.5.2
Utility Ship (empire) in the Stellaris encyclopedia: Utility Ships are constructed at Starbases to assemble space structures, explore the unknown, and settle new worlds.
Utility Ship in the game's words
The encyclopedia entry as the game shows it in its tooltips; underlined words open their own entry or page here.
Utility Ships are constructed at Starbases to assemble space structures, explore the unknown, and settle new worlds.
Examples include 
Construction Ships, 
Science Ships, and 
Colony Ships.
Entries that mention Utility Ship
More in Empire
Source: common/game_concepts (concept_civilian_ship, also concept_civilian_ships) and localisation/english, Stellaris Cygnus v4.5.2 (9776).