SLNS Ranaviru (Ranaviru, in Sinhalese: Warrior) was a Type 062I-class (NATO: Shanghai III class) fast gun boat of the Sri Lanka Navy, attached to the 3rd Fast Gun Boats Squadron from 1991 when she was commissioned to 1996 when she was sunk by two Sea Tiger suicide crafts off the coast of Mullaitivu.

Ranaviru began covering the withdrawal when it was hit by a Sea Tiger suicide craft which inflicted serious damage and disabled its propulsion.

Lieutenant Commander Samaraweera and the crew continued firing her guns and small arms until the disabled ship was hit by a second suicide craft resulting in a massive explosion that sank her.

Commander Samaraweera, who was last seen on the bridge firing a rifle, was listed missing; his body was never recovered and presumed that he went down with his ship.

He was posthumously awarded the Weera Wickrama Vibhushanaya for his gallantry and promoted to the rank of Commander.