Orcas are scientific research vessels, operated by and under the jurisdiction of the military. Orcas are versatile ships. They are not designed for combat, however they are capable of carrying out many different kinds of research and experiments, as well as exploring and charting the galaxy. They are equipped with a variety of advanced automated probes, which they can use for scanning all manner of space phoenomena. They also possess the most advanced sensor equipment of any ships in the UEIDF fleet, and during wartime are frequently employed as long range scouts.