Download American Coastal Defences 1885-1950 by Terrance McGovern, Bolling Smith, Peter Bull PDF

By Terrance McGovern, Bolling Smith, Peter Bull

American Coastal Defences 1885-1950 КНИГИ ;ВОЕННАЯ ИСТОРИЯ American Coastal Defences 1885-1950 (Fortress forty four) ByTerrance McGovernPublisher:Os Publishing2006 64PagesISBN: 1841769223PDF19 MBA new around of fortification construction begun within the usa and its abroad territories within the late-19th century, which benefited from the newest know-how and the rise in America's around the globe financial stature. This publication offers a concise creation to the layout, improvement and objective of yankee coastal defenses within the 'modern interval' (1885-1950), a interval outlined by way of concrete, metal, and robust breech-loading rifles. filled with interval and modern day photographs of the fortifications, and written by way of a number one specialist, it covers the emplacements, weaponry, gear, and folks that defended their nation in occasions of significant switch and uncertainty.sharingmatrixletitbit zero

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These disappearing batteries embodied everything the engineers had learned, and were models of efficiency and simplicity. Only the battery on Oahu and one in the Philippines employed ammunition hoists, while none of the later Panama batteries did. Unlike the Philippine batteries, the traverses of the Panama batteries were designed with sloping sidewalls of sand, rather than vertical concrete, increasing the distance between the guns. The Los Angeles batteries (actually begun in 1916 but their guns and carriages more properly fall into the Endicott-Taft System) followed the general design of the two single-gun 14in.

Mortars in four square pits. When all 16 mortars were fired at once. a shotgun-like pattern descended on the thin deck armor of the warship of that period. This design was later abandoned due to the muzzle blast in the confined space. Fort Hancock's only mortar battery is seen here from a tethered balloon used for fire control. The balloon observer is looking down from his basket at the battery with its unique ditch, counterscarp wall, and machine-gun galleries. An oudine of its underground galleries and magazines can be seen.

The battery designs for the 16in. navy Mkll guns were advanced dumbbell-style on each side of the central magaZine. They were in casemates, protected by about 13ft of concrete over the gun breech, with an earth cover over that surmounted by a 2ft concrete burster course to detonate bombs or shells before they reached the main concrete protection, a feature subsequently found counterproductive and omitted. A projecting concrete canopy provided additional protection over the carriage. Battery Davis' guns were 600ft apart, while Battery Townsley's site constricted them to only 350ft.

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