Brazilian ironclad Herval
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 | |
| History | |
|---|---|
 Empire of Brazil | |
| Name | Herval |
| Namesake | Marquis of Herval |
| Fate | Discarded c. 1885 |
| General characteristics | |
| Type | Armored central battery ship |
| Displacement | 1,353 metric tons (1,332 long tons) |
| Length | 58.22 m (191 ft 0 in) |
| Beam | 10.97 m (36 ft 0 in) |
| Draft | 2.90 m (9 ft 6 in) |
| Installed power | 600 ihp (450 kW) |
| Propulsion | 2 shafts, 1 steam engine |
| Speed | 9 knots (17 km/h; 10 mph) |
| Complement | 125 officers and men |
| Armament | 4 × rifled 70-pounder Whitworth guns |
| Armor | |
The Brazilian ironclad Herval was a Mariz e Barros-class ironclad corvette operated by the Imperial Brazilian Navy from 1866 to 1879. It participated in the battles of the Paraguayan War.
Herval was an iron-hulled, fully rigged central battery ship. It was 191 feet (58 m) long. The ship had a beam of 36 feet (11 m) and a maximum draft of 9 feet 6 inches (2.90 m). Herval displaced 1,353 metric tons (1,332 long tons). Its crew consisted of 125 men. The engines produced a total of 600 indicated horsepower (450 kW) and gave Herval a maximum speed of 9 knots (17 km/h; 10 mph). Herval was armed with four 70-pounder Whitworth rifled muzzle-loading guns. The ship was protected by a 4.5-inch (110 mm) iron belt and 3 inches (76 mm) at the casemate.[1]
Construction
Herval was built at the shipyards in Plymouth, England. It was the second ship to bear the name Herval, in honor of general Manuel Luís Osório, Marquis of Erval. The ship was originally ordered by Paraguay, who named it Medusa, but it was sold to Brazil as the Paraguayans, in financial difficulties due to the ongoing Paraguayan War, were unable to pay for it. It belongs to the same class as the armored corvette Mariz e Barros. The ship arrived in Brazil on 30 May 1866 and on 19 July of the same year it was officially named Herval, being incorporated into the navy also in the same year under the command of first lieutenant Tomás Pedro de Bittencourt Cotrim.[2]
