Question: When did the MV Bessel run aground to at the second largest island in the Mediterranean?

Related documents: [0]  [DOC] Sardinia ( ; Italian: "Sardegna" ] , Sardinian: "Sardìgna/Sardìnnia" ] /] , Sassarese: "Sardhigna", Gallurese: "Saldigna", Catalan: "Sardenya", Tabarchino: "Sardegna") is the second largest island in the Mediterranean Sea (after Sicily and before Cyprus) and an autonomous region of Italy. It is located in the Western Mediterranean, to the immediate south of the French island of Corsica. [END] 
[1]  [DOC] Bessel was a cargo ship that was built in 1925 as Sorrento by AG Weser, Bremen for German owners. She was sold in 1926 and renamed "Bessel". She was seized by the Allies in Vigo, Spain, in May 1945, passed to the Ministry of War Transport (MoWT) and renamed Empire Coniston. In 1946, she was lent to the Danish Government and was allocated to them in 1947. She was sold into Danish merchant service and renamed Birgitte Skou. In 1959, she was sold to Italy and renamed N Martini. She was renamed Nicolo Martini in 1961, serving until 1972 when she ran aground at Portoscuso, Sardinia. Although refloated she was declared a total loss and was scrapped in 1973. [END]  
Answer: 1972
1972