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  2. Teardrop hull - Wikipedia

    en.wikipedia.org/wiki/Teardrop_hull

    A teardrop hull is a submarine hull design which emphasizes submerged performance over surfaced performance. It was somewhat commonly used in the early stages of submarine development, but was gradually abandoned in the early 20th century in favour of designs optimized for high performance on the surface as a result of changes in operational doctrine.

  3. List of unclassified miscellaneous vessels of the United ...

    en.wikipedia.org/wiki/List_of_unclassified...

    The IX (unclassified–miscellaneous) hull classification symbol is used for ships of the United States Navy that do not fit into one of the standard categories. [1] [2] Similar lists of 'miscellaneous' ships can found at List of auxiliaries of the United States Navy § Miscellaneous ships (AG, T-AG) and

  4. List of submarines of the United States Navy - Wikipedia

    en.wikipedia.org/wiki/List_of_submarines_of_the...

    List submarines of the United States Navy, by hull number and boat name Hull number Name Notes Turtle: World's first combat submersible. Deployed in 1775. Failed mission to destroy HMS Eagle. Continental Army project. Alligator: Experimental submarine built in 1862. Foundered in bad weather in 1863. First submarine of the United States Navy.

  5. USS Albacore (AGSS-569) - Wikipedia

    en.wikipedia.org/wiki/USS_Albacore_(AGSS-569)

    USS Albacore (AGSS-569) is a unique research submarine that pioneered the American version of the teardrop hull form (sometimes referred to as an "Albacore hull") of modern submarines. The revolutionary design was derived from extensive hydrodynamic and wind tunnel testing, with an emphasis on underwater speed and maneuverability. [ 4 ]

  6. Type 212A submarine - Wikipedia

    en.wikipedia.org/wiki/Type_212A_submarine

    Initial study started on a Type 209 improved design, with AIP capability, called Type 212. [ citation needed ] The final programme started in 1994 as the navies of Germany and Italy began working together to design a new conventional submarine, respectively to operate in the shallow and confined waters of the Baltic Sea and in the deeper waters ...

  7. Type 212CD submarine - Wikipedia

    en.wikipedia.org/wiki/Type_212CD_submarine

    The Type 212CD class (for Common Design) is a submarine class developed by ThyssenKrupp Marine Systems (TKMS) for the Norwegian and German navies.The class is derived from the Type 212 submarine class, [15] but will be significantly larger than the 212 class.

  8. Family of DC plane crash victim files claim against FAA, Army ...

    www.aol.com/family-dc-plane-crash-victim...

    The family of a passenger who died in the midair collision near Washington, D.C., filed legal claims against the Federal Aviation Administration (FAA) and the United States Army, seeking $250 ...

  9. Barbel-class submarine - Wikipedia

    en.wikipedia.org/wiki/Barbel-class_submarine

    Several features of the experimental Albacore were used in the Barbel-class design, most obviously the fully streamlined "teardrop" hull. Albacore ' s single-shaft configuration, necessary to minimize drag and thus maximize speed, was also adopted for the Barbels, Skipjacks, and all subsequent US nuclear submarines.