Alfredo Cappellini was an Italian monitor converted from the floating crane GA53 during World War I.

She bombarded Austro-Hungarian positions during the Eleventh Battle of the Isonzo in 1917 before she lost in a storm off Ancona on 16 November 1917.

[1] Alfredo Cappellini was built when Cannone navali da 381/40 guns from the Francesco Caracciolo-class battleships became available after their construction was suspended in 1916.

[2] They fired an 884 kg (1,949 lb) armor-piercing shell at a muzzle velocity of 700 m/s (2,297 ft/s) to a range of 27,300 m (89,567 ft) at maximum elevation.

[4] Alfredo Cappellini was launched in 1916, even before the battleships were officially suspended, by the Orlando Shipyard, in Livorno, completed on 24 April 1917 and commissioned four days later.