Italian destroyer Antoniotto Usodimare

Antoniotto Usodimare was one of a dozen Navigatori-class destroyers built for the Regia Marina (Royal Italian Navy) in the late 1920s. Completed in 1929, she served in World War II.

Design and description
The Navigatori-class destroyers were designed to counter the large French destroyers of the Jaguar-class destroyer and Guépard-class destroyeres. They had an overall length of 107.3 m, a beam of 10.2 m and a mean draft of 3.5 m. They displaced 1900 t at standard load, and 2580 t at deep load. Their complement during wartime was 222–225 officers and enlisted men.

The Navigatoris were powered by two Parsons geared steam turbines, each driving one propeller shaft using steam supplied by four Odero-Terni-Orlando water-tube boilers. The turbines were designed to produce 55000 shp and a speed of 32 kn in service, although the ships reached speeds of 38 - 41 kn during their sea trials while lightly loaded. They carried enough fuel oil to give them a range of 3800 nmi at a speed of 18 kn.

Their main battery consisted of six 120 mm guns in three twin-gun turrets, one each fore and aft of the superstructure and the third amidships. Anti-aircraft (AA) defense for the Navigatori-class ships was provided by a pair of 40 mm AA guns in single mounts abreast the forward funnel and a pair of twin-gun mounts for 13.2 mm machine guns. They were equipped with six 533 mm torpedo tubes in two triple mounts amidships. The Navigatoris could carry 86–104 mines.

Construction and career
Antoniotto Usodimare was laid down by Odero-Terni-Orlando at their Genoa-Sestri Ponente shipyard on 1 May 1927, launched on 12 May 1929 and commissioned on 21 November.

In early June 1942, the ITALIAN SUBMARINE Alagi fired on the Italian destroyer Premuda (former Yugoslav destroyer Dubrovnik), mistaking her for a British destroyer owing to her similarities with a British H-class destroyer. The attack missed Premuda and struck Antoniotto Usodimare, sinking her.