Scout
From Memory Alpha, the free Star Trek reference.
In starship classification, a scout is a lightly armed, limited-role starship type.
The USS Revere and USS Columbia were designated as scouts. (Star Trek: The Motion Picture) The USS Grissom and Kruge's Bird-of-Prey were also recognized as scout class vessels. (Star Trek III: The Search for Spock)
In 2374, General Martok sent several scout ships to the Cardassian border. They found no sign of Dominion activity. (DS9: "Resurrection")
