As the largest capital ships of the High Seas Fleet (Hochseeflotte), the five Caesar-class ships became the core of the German Navy's combat force during World War I. There were five ships in this class: the Kaiser (German for emperor), Frederick the Great, Catherine (Empress), King Albert (King of Prussia, son of Frederick William III), and the Regent Louitpold (Prince of the Kingdom of Bavaria, who served as regent after the mysterious death of the "fairy king" Ludwig II of Bavaria). They survived the Battle of Jutland and the 1917 crusade against Russia, and were handed over to Britain after the war, where they were all scuttled in Scapa Bay. The Caesar-class was the first German battleship to use steam turbine power, and as an attempt at a new technology, the Louitpold Regent was also prepared to install a diesel engine as the main power (but it was not installed in the end).

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Ship Name: Caesar (built under the code name Ersatz Hildebrand) | Frederick the Great (built by code name Ersatz Heimdall) | Katherine (built by code name Ersatz Hagen) | King Albert (built by code name Ersatz) | Regent of Louitpold (built under the code name Ersatz Odin)

Shipyard: Royal Dockyards/Wilhelmshaven | Vulcan shipyard / Hamburg | Hovald Shipyard/Kiel | Shuoxiao Shipyard / Danzig | Germania Shipyard / Kiel

Commencement Date: 9/11/1909 | 1/26/1910 | 7/2/1910 | 7/17/1910 | 10/1/1910

Date of launch: 3/22/1911 | 6/10/1911 | 11/11/1911 | 1/27/ 1912 | 2/17/1912

Date of service: 8/1/1912 | 10/15/1912 | 5/14/1913 | 7/31/1913 | 8/19/1913

Sunk: All sunk on June 21, 1919 at Scapa Bay, England

Displacement: 24,724 tons (design) / 27,000 tons (maximum)

Size (m): 172.40 (full length) x 29.00 x 9.10

Power: 16 Sulzer boilers, 3 Parsons/AEG-Curtis steam turbines, 31,000 hp

3-axis, 2-rudder parallel configuration

The maximum speed is 21 knots, and the range is 7900 nautical miles / 12 knots; 2400 nautical miles / 21 knots

Main guns: 10 x 305mm/50x guns, 5 twin turrets

Secondary guns: 14 x 150mm/45x guns, single mounted on the broadside

Anti-torpedo boats/anti-aircraft guns: 12 single-mounted 88mm/45x diameter guns

Torpedoes: 5 x 500mm torpedo tubes (underwater installation, one at the front, one on each side of the A and D turrets)

Crew: 1,084 (41 officers)