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submarine

(Encyclopedia)submarine, naval craft capable of operating for an extended period of time underwater. Submarines are almost always warships, although a few are used for scientific, business, or other purposes (see a...

Wilkins, Sir George Hubert

(Encyclopedia)Wilkins, Sir George Hubert, 1888–1958, British explorer, b. Australia. He made a number of trips to Antarctica and to the Arctic. Valuable experience gained when he accompanied Vilhjalmur Stefansson...

Colt, Samuel

(Encyclopedia)Colt, Samuel, 1814–62, American inventor, b. Hartford, Conn. In 1835–36, he patented a revolving-breech pistol and founded at Paterson, N.J., the Patent Arms Company, which failed in 1842. An orde...

Doenitz, Karl

(Encyclopedia)Doenitz, Karl dönˈĭts [key], 1891–1980, German admiral. He secretly planned a German submarine fleet in the years following the Treaty of Versailles, was given command of submarine operations by ...

Kroehl, Julius Hermann

(Encyclopedia)Kroehl, Julius Hermann, 1820–67, German-American inventor and engineer, b. Memel, Prussia (now Klaipeda, Lithuania). Immigrating in 1844 to the United States, he became an iron manufacturer and civi...

snorkel

(Encyclopedia)snorkel, tube through which a submarine or diver can draw air while underwater. When in use, the top of the snorkel tube extends above the water surface into the air. The first snorkels were probably ...

Groton

(Encyclopedia)Groton grŏtˈən [key]. <1> Town (2020 pop. 38,411), New London co., SE Conn., includi...

Nautilus, vessel

(Encyclopedia)Nautilus: see submarine.

Tirpitz, Alfred von

(Encyclopedia)Tirpitz, Alfred von älˈfrāt fən tĭrˈpĭts [key], 1849–1930, German admiral. His influence on German naval policy began with his study of the recently invented torpedo and his consequent appoin...

Brest, city, France

(Encyclopedia)Brest brĕst [key], city, Finistère dept., NW France, on an inlet of the Atlantic Ocean. It ...