U.S.S. De Kalb
- Class: 1 transport of 1917
- Displacement: 8,987 tons
- Dimensions: 488 x 55 x 32 ft
- Machinery: 2-shaft reciprocating (VTE) engines NHP 417 = 15 knots
- Armament: 8-5in/50
- Builder: A. G. Vulcan, Stettin, Germany, 1904
- Service: Built as North German Lloyd liner Prinz Eitel Friedrich. Converted at start of WW1 to armed merchant cruiser at Tsingtao 6 Aug 1914. Sailed with armament of 4-4.1in and 6-3.4in guns from gunboats Tiger, Luchs, Iltis, and Kormoran. Forced to seek internment at Newport News, Virginia, 10 Mar 1915, due to lack of fuel. Seized on U.S. entry into war, Apr 1917 and converted to transport as shown here. Sold 1920 and renamed Mount Clay.