1931(Mare Nostrum NM-24a)
- Type: Passenger / cargo
- Displacement: 1,240 tons
- Dimensions: 264 x 40 x 17 ft
- Machinery: 2 Fiat M.456 diesels, twin screw, 2200 shp = 15.8 knots
- Passengers: 84
- Builder: Cantiere Riuniti d'ell'Adriatico, Monfalcone, 1931
- Service: Brioni was the first of six sisters built for the "Puglia" Societa Anonima di Navigazione a Vapore (Bari). The others were Adriatic, Brindisi, Zara, Monte Gargano and Barletta, all completed in 1931. After 1932 all were transferred to the Adriatic Line.