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2. 3-inch ordnance rifle - Wikipedia

   en.wikipedia.org/wiki/3-inch_ordnance_rifle

   The 3-inch ordnance rifle, model 1861 was a wrought iron muzzleloading rifled cannon that was adopted by the United States Army in 1861 and widely used in field artillery units during the American Civil War. It fired a 9.5 lb (4.3 kg) projectile to a distance of 1,830 yd (1,670 m) at an elevation of 5°. The 3-inch rifle was not as effective in ...

3. Wrought iron - Wikipedia

   en.wikipedia.org/wiki/Wrought_iron

   Wrought iron. Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%). It is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to failure.

4. Hector-class ironclad - Wikipedia

   en.wikipedia.org/wiki/Hector-class_ironclad

   The Hector-class ships had a wrought iron waterline armour belt, 4.5 inches (114 mm) thick, that covered 216 feet (65.8 m) amidships and left the bow and stern unprotected. To protect against raking fire the belt was closed off by 4.5-inch transverse bulkheads at each end at lower deck level.

5. HMS Valiant (1863) - Wikipedia

   en.wikipedia.org/wiki/HMS_Valiant_(1863)

   It had a muzzle velocity of 1,410 ft/s (430 m/s) and was credited with the ability to penetrate a nominal 9.6 inches (244 mm) of wrought iron armour at the muzzle. The 16-calibre 7-inch gun weighed 6.5 long tons (6.6 t) and fired a 112 pounds (50.8 kg) shell. It was credited with the nominal ability to penetrate 7.7-inch (196 mm) armour.

6. Blakely rifle - Wikipedia

   en.wikipedia.org/wiki/Blakely_rifle

   Blakely rifle or Blakely gun is the name of a series of rifled muzzle-loading cannon designed by British army officer Captain Theophilus Alexander Blakely in the 1850s and 1860s. [1][2] Blakely was a pioneer in the banding and rifling of cannon but the British army declined to use Blakely's design. [3] The guns were mostly sold to Russia and ...

7. John Ericsson-class monitor - Wikipedia

   en.wikipedia.org/wiki/John_Ericsson-class_monitor

   The John Ericsson-class monitors were a group of five iron-hulled monitors; four were built for the Royal Swedish Navy and one for the Royal Norwegian Navy in the mid to late 1860s. They were designed under the supervision of the Swedish-born inventor, John Ericsson, and built in Sweden. Generally, the monitors were kept in reserve for the ...