The USS Lavinius (NCC-2758) was a Loknar-class (mark II subclass) Federation frigate starship in the 23rd century, entering Starfleet service on reference stardate 2/0111. The Lavinius was named for the star system Lavinius, and was declared lost on stardate 2/0902. (FASA RPG module: Federation Ship Recognition Manual)
Dana Sortino served as first officer aboard the Lavinius before retiring from Starfleet to join the Federation Diplomatic Corps. During this time, the vessel was assigned to patrol the Federation-Klingon border. (TOS novel: That Which Divides)