 The boat was commissioned in 1949 as "Sava" (pennant number P-802), and with the "Mališan" (P-901) and "Tara" (P-801), formed the basis of the new Yugoslav submarine fleet.In 1958 the boat was relegated to training duties, followed by a major refit which lasted from 1958 to 1960.The refit involved removing her 100 mm deck gun and reconstruction of the conning tower in order to make it more streamlined.