The Woglinde is a battleship specifically built to combat the Gnosis, a mysterious alien race that forms one of the series' primary antagonists. It was ambushed by the Gnosis and destroyed during the first chapter of Episode I, resulting in the deaths of many Galaxy Federation workers and soldiers, as well as the official activation of KOS-MOS and the beginning of the series' plot. One of the Zohar emulators was recovered and stored on board the Woglinde (hence the Gnosis attack; the Gnosis are attracted to the Zohar and its emulators) until it was captured by the Gnosis. Its destruction was also the root of a plot hatched by U-TIC and Ormus to frame the Kukai Foundation and Second Miltia.

Spanning 1000 meters (roughly ⅝ of a mile) in length, the Woglinde was constructed by Vector Industries and loaned to the Galaxy Federation Marine Corps. It was rushed into service with a bare-bones propulsion system and a hastily assembled bridge, and was approximately eighty percent incomplete. Because of its prototype nature, the Woglinde still carries Vector livery. In addition to the flaws listed before, it also lacked, as quoted by the Bridge crew, sufficient time to position the standard anti-Gnosis 100 Series Observational Realian units, a factor that kept the fleet from drawing the Gnosis into the material world using the Hilbert Effect and led to its swift defeat. The ship was capable of splitting into two sections. The upper section housed the bridge, and the lower section, built from recycled materials, housed the Logic Drive. However, during the Gnosis attack, this feature was not used.

The Woglinde's successor, the Woglinde II, was a completed version of the Woglinde plan. It was eight times the original length, spanning 8000 meters (5 miles), and housed the large-scale anti-Gnosis weapon known as the Rhine Maiden.