The TNAF Cnossio 004-300 was a Tugali Avarice-class destroyer belonging to the First Fleet of Oporto Arawica. Because she served in the First Fleet, the Cnossio served in the western half of the Arawdielli Sea. The Cnossio was stationed in the Extension Island Defense Installation on Askeri Island, and served as a military escort to civilian vessels en route to Tugali Elysium and Tugali Arawdiellia along the Skyllia Trade Route in light of the ferocity of Altadenican privateers. The Cnossio was chosen by Captain Bryant Burradur to form a new expedition that would reinforce the expedition led by Commander Parker Lloyesia, which had been hit hard when the ACRAG Yimata arrived to participate in the confrontations involving the Serpentine Blockade. It was sunk in a final showdown with the GSC Primaria, the flagship of the Serpentine Blockade; all but two of its crew survived.
The Cnossio is named for Fortaleza Cnossio, one of many fortalezas established during the wave of Tugali colonialism during the Median Era.