USS Danube (NX-72003)

The USS Danube (NX-72003) was the prototype of the Danube class runabout.

Starfleet began construction of the Danube at the Utopia Planitia Fleet Yards in 2365 and test flights began from the surface of Mars began in 2368. Warp drive tests were later conducted in the Sol system at the same its sister ships were being constructed. (Star Trek: Deep Space Nine Technical Manual)