 = SMS Erzherzog Ferdinand Max = 
 
 For the ironclad present at the Battle of <unk> of the same name , see SMS Erzherzog Ferdinand Max ( 1865 ) . 
 SMS Erzherzog Ferdinand Max ( German : " His Majesty 's ship <unk> Ferdinand Max " ) was a pre @-@ dreadnought battleship built by the Austro @-@ Hungarian Navy in 1902 . The second ship of the Erzherzog Karl class , she was launched on 3 October 1903 . She was assigned to the III Battleship Division . 
 For most of World War I , Erzherzog Ferdinand Max remained in her home port of Pola , in present @-@ day Croatia , except for four engagements . In 1914 , she formed part of the Austro @-@ Hungarian flotilla sent to protect the escape of the German ships SMS Goeben and SMS Breslau from the British @-@ held Mediterranean ; she advanced as far as Brindisi before being recalled to her home port . Her sole combat engagement occurred in late May 1915 , when she participated in the bombardment of the Italian port city of Ancona . She also took part in suppressing a major mutiny among the crew members of several armored cruisers stationed in Cattaro between 1 – 3 February 1918 . She also attempted to break through the Otranto <unk> in June of that year , but had to retreat when the dreadnought SMS Szent István was sunk . After the war , Erzherzog Ferdinand Max was awarded to the United Kingdom as a war prize in 1920 . 
 
 = = Design = = 
 
 Erzherzog Ferdinand Max displaced 10 @,@ <unk> long tons ( 10 @,@ 640 t ) . She was 414 feet 2 inches ( 126 @.@ 2 m ) long , had a beam of 71 feet 5 inches ( 21 @.@ 8 m ) and a draft of 24 feet 7 inches ( 7 @.@ 5 m ) . She was manned by 700 men . She and her sisters were the last and largest pre @-@ dreadnought class built by the Austro @-@ Hungarian Navy , surpassing the Habsburg class by approximately 2 @,@ 000 tonnes ( 1 @,@ 968 long tons ) . She was propelled by two two @-@ shaft , four cylinder vertical triple expansion steam engines . On trials , they developed 18 @,@ 000 <unk> ( 13 @,@ <unk> kW ) , which propelled the ship at a speed of 20 @.@ 5 knots ( 38 @.@ 0 km / h ; 23 @.@ 6 mph ) . 
 Erzherzog Ferdinand Max carried a primary armament of four 24 @-@ centimeter ( 9 @.@ 4 in ) / 40 caliber guns in two twin turrets on the centerline . These guns were an Austro @-@ Hungarian replica of the British 24 cm / 40 ( 9 @.@ 4 " ) <unk> C / 94 , which was used on the Habsburgs . Her secondary armament consisted of twelve 19 @-@ centimeter ( 7 @.@ 5 in ) / 42 caliber guns , also made by <unk> , mounted in eight single casemates on either wing of the ship and two twin turrets on the <unk> shell 20 @,@ 000 metres ( 22 @,@ 000 yd ) at maximum elevation with a muzzle velocity of 800 metres per second ( 2 @,@ 600 ft / s ) . The gun weighed 12 @.@ 1 tons and could fire three rounds per <unk> ships had a tertiary armament for protection against torpedo boats in the form of the 6 @.@ 6 centimetres ( 2 @.@ 6 in ) / 45 caliber gun , also manufactured by <unk> . Anti @-@ aircraft and airship protection was covered by the four 37 @-@ millimeter ( 1 @.@ 5 in ) Vickers anti @-@ aircraft guns on the ship bought from Britain in 1910 and mounted onto Erzherzog Karl . Erzherzog Ferdinand Max was also fitted with two above water 45 @-@ centimeter ( 17 @.@ 7 in ) torpedo tubes , although rarely used . 
 
 = = Service history = = 
 
 At the outbreak of World War I , Erzherzog Ferdinand Max was in the III division of the Austrian @-@ Hungarian battle @-@ fleet . She was mobilized on the eve of the war along with the remainder of the fleet to support the flight of SMS Goeben and SMS Breslau . The two German ships were attempting to break out of <unk> , which was surrounded by British troops , and make their way to Turkey . The breakout succeeded . When the flotilla had advanced as far south as Brindisi in south eastern Italy , the Austro @-@ Hungarian ships were recalled . In company with other units of the Austro Hungarian navy , Erzherzog Ferdinand Max took a minor part in the bombardment of Ancona on 24 May 1915 . There she and her sisters expended 24 rounds of 240 mm armor @-@ piercing shells at signal and <unk> stations as well as 74 rounds of 190 mm shells aimed at Italian gun @-@ batteries and other port installations . 
 A major mutiny among crews of the armored cruisers stationed in Cattaro , including <unk> Georg and Kaiser Karl VI , began on 1 February 1918 . Two days later , Erzherzog Ferdinand Max and her sisters arrived in the port and assisted with the suppression of the mutiny . Following the restoration of order in the naval base , the armored cruisers <unk> Georg and Kaiser Karl VI were decommissioned and Erzherzog Ferdinand Max and her sisters were stationed in Cattaro in their place . On the morning of 11 June , Admiral <unk> Horthy planned a major assault on the Otranto <unk> ; the three Erzherzog <unk> and the four Tegetthoff @-@ class battleships were to provide support for the <unk> @-@ class cruisers on an assault on the Allied defenses at the Strait of Otranto . The plan was intended to replicate the success of the raid conducted one year earlier . Horthy 's plan was to destroy the blockading fleet by <unk> Allied ships to the cruisers and lighter ships , which were protected from the heavier guns of the battleships , including the guns of the Erzherzog Karl class . However , on the morning of 10 June , the dreadnought Szent István was torpedoed and sunk by an Italian torpedo boat . Horthy felt that the element of surprise had been compromised , and therefore called off the operation . This was to be the last military action Erzherzog Ferdinand Max was to take part in , and she and her sisters spent the rest of their career in port . 
 Near the end of World War I , the Erzherzog Karl @-@ class battleships were handed over to the newly formed State of Slovenes , Croats and Serbs but Erzherzog Ferdinand Max was later transferred to Great Britain as a war reparation . She was later broken up for scrap in 1921 . 
 
 