French protectorate of Tunisia
"Smeli" was the second of her class, and the fourth submarine of the navy of the Kingdom of Serbs, Croats and Slovenes (later the Royal Yugoslav Navy). She was launched on 1 December 1928. She and "Osvetnik" arrived in the Bay of Kotor on 9 December 1929. In 1932, the British naval attaché reported that Yugoslav ships were engaging in few exercises, manoeuvres or gunnery training due to reduced budgets. In October 1934, "Smeli" visited Bizerte in the French protectorate of Tunisia, and the Kelibia Roads off the coast of Tunisia. In August and September 1937, "Smeli", along with the British-made submarine "Hrabri" and the depot ship "Zmaj", visited Greece, including the port of Piraeus, and the islands of Crete and Corfu.