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periscope

(Encyclopedia)periscope pĕrˈĭskōp [key] [Gr.,=view around], instrument to enable a person to see objects not in his direct line of vision or concealed by some intervening body. Its essential parts are a tube, p...

Rickover, Hyman George

(Encyclopedia)Rickover, Hyman George, 1900–1986, American admiral, b. Russia. In World War II he served as head of the electrical section of the navy's Bureau of Ships. After the war he was assigned (1946) to the...

Norwegian Sea

(Encyclopedia)Norwegian Sea, part of the Atlantic Ocean, NW of Norway, between the Greenland Sea and the North Sea. It is separated from the Atlantic by a submarine ridge linking Iceland and the Faeroe Islands, and...

Capelle, Eduard von

(Encyclopedia)Capelle, Eduard von āˈdo͞oärt fən käpĕlˈə [key], 1855–1931, German admiral. As secretary for the navy (1916–18) he reinstituted (1917) unrestricted submarine warfare in World War I. ...

Thames , river, United States

(Encyclopedia)Thames thāmz [key], river, c.15 mi (25 km) long, formed by the confluence of the Yantic and Shetucket rivers at Norwich, E Conn., and flowing south to Long Island Sound at New London. Primarily a tid...

Lusitania, ship

(Encyclopedia)Lusitania, liner under British registration, sunk off the Irish coast by a German submarine on May 7, 1915. In the sinking, 1,198 persons lost their lives, 128 of whom were U.S. citizens. A warning to...

torpedo , in naval warfare

(Encyclopedia)torpedo, in naval warfare, a self-propelled submarine projectile loaded with explosives, used for the destruction of enemy ships. Although there were attempts at subsurface warfare in the 16th and 17t...

Arabian Sea

(Encyclopedia)Arabian Sea, ancient Mare Erythraeum, northwest part of the Indian Ocean, lying between Arabia and India. The Gulf of Aden, extended by the Red Sea, and the Gulf of Oman, extended by the Persian Gulf,...

Hubbard, Elbert

(Encyclopedia)Hubbard, Elbert, 1856–1915, American author and publisher, b. Bloomington, Ill. He founded (1895) an artist colony in East Aurora, N.Y., and established there the Roycroft Press, emulating William M...

Gerard, James Watson

(Encyclopedia)Gerard, James Watson jərärdˈ [key], 1867–1951, U.S. ambassador to Germany (1913–17), b. Geneseo, N.Y. As ambassador, he handled many delicate negotiations, including those concerning the German...