The Kaiser class was a class of five dreadnought battleships that were built in Germany prior to World War I and served in the Kaiserliche Marine during the war. They were the third class of German dreadnoughts, and the first to feature turbine engines and superfiring turrets. The five ships were Kaiser, Friedrich der Grosse, Kaiserin, Prinzregent Luitpold, and König Albert. As was usual for German battleships of the period, the Kaiser class mounted main guns that were smaller than those of their British rivals: 30.5 cm (12 in), compared to the 34.3 cm (13.5 in) guns of the British Orion class.
The Surrender of the German High Seas Fleet, November 1918 Q19302
Surrendered German battleships in the Firth of Forth, probably at dawn RMG PW1875
Bundesarchiv DVM 10 Bild-23-61-42, Großlinienschiff im Schwimmdock
'Battle ships of German High Seas Fleet off Inch Keith' RMG PW1758
Kaiser class NARA-16581504
Navy - Naval Operations - Surrender of the German Fleet - Ships - Groups - The surrendered German fleet at anchor as seen from a British airship. One of the German warships of the "Kaiser" class at anchor at East(...) - NARA - 45511690