Mignatta or "leech") into the Austro-Hungarian naval base at Pola. They had sailed from an Italian port some time before, and were unaware of the transfer of the Austro-Hungarian fleet the previous day. Travelling down the rows of Austrian battleships, the two men encountered Jugoslavija at around 4:40 am. Rossetti placed one canister of TNT on the hull of the battleship, timed to explode at 6:30 am. He then flooded the second canister, sinking it on the harbour floor close to the ship. The men had no breathing sets, and therefore had to keep their heads above water. They were discovered and taken prisoner just after placing the explosives under the battleship's hull. Taken aboard Jugoslavija, they informed the new captain of the battleship of what they had done but did not reveal the exact position of the explosives. Admiral Janko Vuković arranged for the two prisoners to be taken to , and ordered Jugoslavija to be evacuated. The explosion did not happen at 6:30 as predicted and Vuković returned to the ship with many sailors, mistakenly believing that the Italians had lied. The mines exploded at 6:44, sinking Jugoslavija in 15 minutes. Vuković and 300–400 of her crew were killed in the sinking. The explosion of the second canister also sank the Austrian freighter Wien. Paolucci and Rossetti were interned until the end of the war a few days later, and were honoured by the Kingdom of Italy with the Gold Medal of Military Valor. Commemorations SMS Viribus Unitis was selected as the main motif of a high value collectors' coin: the Austrian SMS Viribus Unitis commemorative coin, minted on 13 September 2006. The obverse side shows the flagship Viribus Unitis as seen from the deck of an accompanying ship in the fleet. Two other ships of an older class can be seen in the background. The reverse of the coin is a tribute to the old Austro-Hungarian Imperial Navy, showing SMS Viribus Unitis from a front angle. A naval biplane circles overhead and a submarine surfaces in the foreground. The coin commemorates not only the ship Viribus Unitis, but also the three main arms of the Austro-Hungarian Navy in the First World War. The coin was the last of the series "Austria on the High Seas". There is a cutaway model of Viribus Unitis in the Museum of Military History in Vienna. The model is at a scale