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The first Iowa-class ship was laid down in June 1940; in their World War II configuration, each of the Iowa-class battleships had a main battery of 16-inch (406 mm) guns that could hit targets nearly 20 statute miles (32 km) away with a variety of artillery shells designed for anti-ship or bombardment work. The secondary battery of 5-inch (127 ...
Mary Florence Potts was born in Ottumwa, Iowa on November 1, 1850, to Jacob Hanec Webber (from Pennsylvania) and Anna Nancy McGinley (from Pennsylvania). [1] She married Joseph Hunt Potts, a man 17 years older than she, at the age of 17 on June 7, 1868, in Ottumwa, Iowa. Her first child was born in 1869, a son she named Oscero.
An increase in draft, vast additions to the armor, [N 3] and the substitution of twelve 6-inch (152 mm) guns in the secondary battery were common among the three designs. "A" was the largest, at 59,060 long tons (60,010 t) standard, and was the only one to still carry the twelve 16-inch guns in four triple turrets (3-gun turrets according to US ...
The United States Navy battleship USS Washington had a main battery of nine 16-inch (410 mm) guns arranged in three turrets, two forward and one aft. The secondary battery was 5-inch dual purpose guns, allowing use against other ships and aircraft. A dedicated anti-aircraft battery was composed of light Bofors 40 mm guns and Oerlikon 20 mm ...
Oerlikon 20mm AA gun mount on board USS Iowa (BB-61) Post–World War I battleships, particularly British and American, had discarded single purpose secondary batteries mounted in casemates used to engage surface targets in favour of turret-mounted dual purpose secondary batteries (5-inch or 6-inch caliber). Secondaries were initially designed ...
Iowa ' s main battery turrets were protected with 15 in (381 mm) on the sides and 2 in thick crowns; the rears of the turrets were 17 in (432 mm) thick, with the greater weight being used to balance the turret. Their barbettes were also 15 in thick on the exposed sides and reduced to 12.5 in (318 mm) where it was protected by the belt.
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Second World War-era capital ships had four classes of artillery: the heavy main battery, intended to engage opposing battleships and cruisers of 305 mm to 457 mm (12 inch to 18 inch); a secondary battery for use against enemy destroyers of 152 mm to 203 mm (6 inch to 8 inch); heavy anti-aircraft guns of 76 mm to 127 mm (3 inch to 5 inch), which could create barrages to knock out airplanes at ...