Editing Tegetthoff-class battleship (section)

=== Propulsion ===
[[File:Tegetthoff turbines.png|thumb|right|One of ''Tegetthoff''{{'}}s turbines|alt=]]
Differences between the three battleships constructed in Trieste and the one in Fiume were most apparent when examining each ship's propulsion. ''Szent István'' differed from the other ships in that she possessed two propellers and two larger [[Parsons Marine Steam Turbine Company|Parsons]] [[steam turbine]]s, while the propulsion of ''Viribus Unitis'', ''Tegetthoff'', and ''Prinz Eugen'' each had four smaller Siemens turbines and four propellers. These turbines were housed in a separate engine-room and with the exception of SMS ''Szent István'', they were powered by twelve [[Yarrow boiler]]s. The more modern new type of [[Babcock & Wilcox]] boilers of ''Szent István'' were 48 tonnes heavier than the older type Yarrow boilers installed on the sister ships; however, they were more efficient than the old boilers. The new Babcock & Wilcox boilers had a huge advantage of being able to maintain top speed for up to eight hours, compared with only two hours on their sister ships.<ref>[https://epa.oszk.hu/00000/00018/00012/05kraml1.htm Mihály Krámli: Az SMS Szent István Link]</ref> They were designed to produce a total of {{convert|26400|or|27000|shp|lk=in|0|sp=us}}, which was theoretically enough to attain a maximum designed speed of {{convert|20|kn|sp=us}}. While it was reported during the speed trials of ''Tegetthoff'' that she attained a top speed of {{convert|19.75|kn|sp=us}},{{sfn|Earle|1913|p=1322}} the actual top speed of the ''Tegetthoff''-class ships is unknown as the [[sea trial]] data and records for each ship were lost after the war.{{sfn|Sieche|1991|p=133}} Each ship also carried {{convert|1844.5|t|LT|sp=us}} of coal, and an additional {{convert|267.2|t|LT|sp=us|0}} of [[fuel oil]] that was to be sprayed on the coal to increase its burn rate.{{sfn|Sieche|1991|p=133}} At full capacity, the ''Tegetthoff''s could steam for {{convert|4200|nmi|lk=in|sp=us}} at a speed of {{convert|10|kn|sp=us}}.{{sfn|Sieche|1985|p=334}}