Smeli (Daring) was the second of the Osvetnik-class diesel-electric submarines built by Ateliers et Chantiers de la Loire, Nantes, France for the navy of the Kingdom of Serbs, Croats and Slovenes (later Yugoslavia).

Due to her age and shallow diving depth, when she was commissioned into the Regia Marina as Antonio Bajamonti; her service was limited to training and experimentation.

[2] Smeli was built for the Kingdom of Serbs, Croats and Slovenes (later Yugoslavia) by the Ateliers et Chantiers de la Loire company (ACL) at Nantes, France.

Her partial double hull design[3] was based on plans by ACL's chief engineer, G. Simonot,[4] and was similar to the French Circé-class submarines.

[5] For surface running, the Osvetnik-class boats were powered by two MAN (Maschinenfabrik) diesel engines which were rated at 1,480 brake horsepower (1,100 kW) that drove two propeller shafts.

[6] In 1932, the British naval attaché reported that Yugoslav ships were engaging in few exercises, manoeuvres or gunnery training due to reduced budgets.

[8] 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.