*, an Imperial German Navy light cruiser

*, a Chatham-class light cruiser launched in 1912, decommissioned in 1928, and broken up for scrap

*, a Leander-class light cruiser launched in 1934, and sunk following an engagement with the German auxiliary cruiser Kormoran on 19 November 1941.

*, was an Omaha-class light cruiser, saw action in World War II

*, was a heavy cruiser commissioned in 1937 and lost in the Battle of Savo Island in 1942

*, light cruiser commissioned late in World War II

*, was a protected cruiser commissioned in 1890.

*, was a heavy cruiser commissioned in 1943.

*, was a protected cruiser commissioned in 1887 and took part in the Spanish-American War

*, was a heavy cruiser commissioned 1943 and active in both World War II and the Korean War

*, was an armored cruiser commissioned in 1893, in action in the Spanish-American War, renamed to Saratoga in 1911, renamed Rochester in 1917, decommissioned in 1933, and scuttled in 1941.

*, the third Alaska-class cruiser, was launched, but never commissioned.

*, was a Pennsylvania-class armored cruiser that escorted troops and convoys during World War I

*, was a Tennessee-class armored cruiser, launched in 1905, renamed Seattle in 1916, reclassified as a heavy cruiser in 1920 ; and scrapped 1946

*, was a Lexington-class battle cruiser, that was canceled and scrapped when the vessel was only 12 percent complete.

*, a New Orleans-class heavy cruiser, which served from 1934 until 1946.

*, was a New Orleans-class ( 1896 ) protected cruiser commissioned in 1898, decommissioned in 1922, and served during both the Spanish-American War and World War I

*, was a New Orleans-class ( 1931 ) heavy cruiser commissioned in 1934, decommissioned in 1947, and saw much service in World War II

*, a guided missile cruiser commissioned in 1989, currently in active service

*, a later name for cruiser USS New York ( ACR-2 )

*, was a heavy cruiser commissioned in 1930, and sunk in 1942

*, was a light cruiser commissioned in 1943, and decommissioned in 1947

*, an auxiliary cruiser purchased in 1898 and used in the Spanish-American War

*, a gunboat of the Imperial German Navy

*, was a German ocean liner, launched in 1908.

*, a German organisation of non-profit youth exchange groups

*, a German cargo ship in service 1937-45

The units of R form a group U ( R ) under multiplication, the group of units of R. Other common notations for U ( R ) are R *, R < sup >×</ sup >, and E ( R ) ( for the German term Einheit ).

*, christened in 1942 and sunk the next year by a German dive bomber

*, a German aircraft manufacturer of the early twentieth century

*, a German cargo ship in service 1956-60

* 1918 – 1920 — ... von Rönne *, since 1919 only for the part that remained German

*, a West German merchant ship

*, was the German ship Bochum seized in 1917 and used until 1919

*, a German coaster

*, the former German Z38 taken after the war's end, and scrapped in 1949.

*, a German passenger liner which entered service in 1929 and was scrapped in 1952 which was involved in transporting refugees from Nazi Germany in 1939

*, British passenger ship sunk by a German submarine in 1915

*, German – built passenger liner, operated by the British White Star Line after World War 1

*, a German cargo ship in service during 1939

*, a German cargo ship in service 1941-45

*, was a German cargo ship named Odenwald, taken over by the US Navy during World War I

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