SMS Szent István

SMS Szent István. Named for Stephen I of Hungary, the first King of Hungary, it was the fourth and final member of the Tegetthoff-class battleship dreadnoughts built for the Austro-Hungarian Navy. Commissioned during World War I, its service was brief and largely uneventful until its dramatic sinking in 1918, an event famously captured on film. The loss of Szent István represented a significant blow to Austria-Hungary's naval capabilities in the Adriatic Sea.

Design and Construction

The design followed that of its sister ships, including SMS Viribus Unitis, featuring a main battery of twelve 30.5 cm SK L/45 guns mounted in four triple gun turrets. Constructed at the Ganz-Danubius shipyard in Fiume (modern Rijeka), a strategic port of the Kingdom of Hungary, its building was part of the naval arms race preceding the war. Unlike its sisters built in Stabilimento Tecnico Triestino in Trieste, the Szent István experienced delays due to the relative inexperience of its builder with large warships. Key characteristics included a pronounced tumblehome hull form and a secondary battery of twelve 15 cm SK L/45 guns, designed for engagements in the confined waters of the Adriatic Sea.

Operational History

After its commissioning in late 1915, Szent István was assigned to the 1st Battle Squadron of the Austro-Hungarian Navy, based primarily at the main naval base at Pola (modern Pula). Its operational history was constrained by the cautious strategy of the Austro-Hungarian Navy High Command, which sought to preserve its capital ships as a fleet in being. Consequently, the battleship spent much of the war conducting training exercises and providing a defensive presence in the Northern Adriatic, alongside units like SMS Tegetthoff and SMS Prinz Eugen. A major sortie was planned for June 1918, aimed at attacking the Otranto Barrage, a Allied anti-submarine barrier in the Strait of Otranto.

Sinking

The sinking occurred on 10 June 1918 during the transit to the assault on the Otranto Barrage. While steaming south from Pola in the early morning, the formation was attacked by two Regia Marina MAS motor torpedo boats, MAS-15 and MAS-21, commanded by Luigi Rizzo and Giuseppe Aonzo. In a daring raid, MAS-15 penetrated the escort screen and launched two torpedoes at Szent István. Both struck the battleship's starboard side, causing critical flooding. Despite frantic counter-flooding efforts by the crew, the ship developed a severe list. Capsizing near the island of Premuda, it sank within three hours. The event was filmed from the deck of its sister ship, SMS Tegetthoff, creating one of the only known motion picture records of a major warship sinking during combat.

Wreck and Legacy

The wreck of Szent István lies upside down on the seabed near Premuda at a depth of approximately 66 meters. It was rediscovered by divers in the 1970s and has since become a popular, though challenging, site for technical diving. The film of its sinking, often shown in documentaries about World War I naval warfare, has cemented its place in historical memory. The loss effectively ended major offensive operations by the Austro-Hungarian Navy and underscored the growing threat posed by small, fast torpedo boats to capital ships. Today, artifacts from the ship, including its bell, are displayed in museums, and the wreck is protected as a war grave under Croatian law.

Category:Tegetthoff-class battleships Category:World War I battleships of Austria-Hungary Category:Maritime incidents in 1918 Category:Ships built in Rijeka