Matches in DBpedia 2016-04 for { ?s ?p "The coast defense mortar was a massive weapon of 12-inch (305 mm) caliber emplaced during the 1890s and early 20th century to defend U.S. harbors from seaborne attack. In 1886 when the Endicott Board set forth its plan for upgrading the coast defenses of the United States, it relied primarily on mortars, not guns, to defend American harbors. Over the years, provision was made for fortifications that would mount some 476 of these weapons, although not all of these tubes were installed."@en }
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- 12-inch_coast_defense_mortar comment "The coast defense mortar was a massive weapon of 12-inch (305 mm) caliber emplaced during the 1890s and early 20th century to defend U.S. harbors from seaborne attack. In 1886 when the Endicott Board set forth its plan for upgrading the coast defenses of the United States, it relied primarily on mortars, not guns, to defend American harbors. Over the years, provision was made for fortifications that would mount some 476 of these weapons, although not all of these tubes were installed.".
- Q4548044 comment "The coast defense mortar was a massive weapon of 12-inch (305 mm) caliber emplaced during the 1890s and early 20th century to defend U.S. harbors from seaborne attack. In 1886 when the Endicott Board set forth its plan for upgrading the coast defenses of the United States, it relied primarily on mortars, not guns, to defend American harbors. Over the years, provision was made for fortifications that would mount some 476 of these weapons, although not all of these tubes were installed.".