The SDS Icarius is a Settlement Defense Front destroyer under the command of Vice Admiral Caleb Thies. It housed a meeting of the Settlement Defense Front leadership near Pluto.
Nick Reyes and Nora Salter boarded the warship to assassinate all members of the meeting by shutting down life support during Operation Deep Execute.
- The destroyer is also named Icaria as mentioned by Nora Salter during the mission. The name Icaria can also be seen on the hull. It is unknown why the name was changed to Icarius.
- The ship may be named after the Icaria Planum, a Martian plain.