# French ironclad Solférino

Solférino was the second and last ship of the Magenta class of broadside ironclads built for the French Navy (Marine nationale) in the early 1860s.
These two ironclads were the only two-decked broadside ironclad battleships ever built. They were also the first ships in the world to be equipped with a spur ram.

## Design and description

The Magenta class were two-decked ironclad ships of the line, much as the preceding Gloire-class ironclad were armored versions of traditional frigates. Solférino was 85.51 m (280 ft 7 in) long, had a beam of 17.34 meters (56 ft 11 in), and a draft of 8.44 meters (27 ft 8 in). The ship displaced 6,796 t (6,689 long tons). The Magentas were equipped with a metal-reinforced, spur-shaped ram, the first ironclads to be fitted with a ram, and they had a crew of 674 officers and enlisted men.
The Magenta-class ships had a single two-cylinder horizontal-return connecting-rod compound steam engine that drove the propeller shaft, using steam provided by eight boilers. The engine was rated at 1,000 nominal horsepower or 3,450 metric horsepower (2,540 kW) and was intended to give the ships a speed in excess of 13 knots (24 km/h; 15 mph). During their sea trials, Solférino achieved a speed of 12.88 knots (23.85 km/h; 14.82 mph) from 4,012 metric horsepower (2,951 kW). The Magenta class carried enough coal to allow them to steam for 1,840 nautical miles (3,410 km; 2,120 mi) at a speed of 10 knots (19 km/h; 12 mph). They were originally fitted with a three-masted barquentine rig that had a sail area of 1,711 square meters (18,420 sq ft), but they were re-rigged as barques with 1,960 m$^2$ (21,100 sq ft) in 1864–1865.

### Armament

The design of the Magenta class was rather unique, because they were ironclads with two covered gun decks. Its lower gun deck was 1.96 m high. This was much higher than the gun decks of Couronne (1.79 m) and Gloire (1.81 m) which were found to low. As designed, Solférino would get 48 canons de 16 cm modèle 1858-60. This armament was changed on multiple occasions.
On 4 January 1864 the armament was determined as:
* Upper deck: 2 * 22 cm rifled shell guns (muzzle-loading) on pivot mounts as chase guns fore and aft
* Upper gun deck: 24 * 16 cm rifled muzzle-loading (RML) Modèle 1858–60 guns
* Lower gun deck: 16 * 194-millimeter (7.6 in) (50-pdr) smoothbore muzzle-loading guns and 10 * 16 cm Modèle 1858–60 RML
On 20 October 1866, the lower battery was disarmed and a new configuration was determined:
* Upper deck: 4 * Canon de 24 C modèle 1864 (9.4 in)
* Upper gun deck: 6 * Canon de 24 C modèle 1864 (9.4 in) and 12 * Canon de 19 C modèle 1864 (7.6 in)
* Lower gun deck: empty
In February 1868, this was changed again to:
* Upper deck: 4 * Canon de 24 C modèle 1864 (9.4 in)
* Upper gun deck: 6 * Canon de 24 C modèle 1864 (9.4 in)
* Lower gun deck: empty
In December 1868, this was changed to:
* Upper deck: 4 * Canon de 19 C modèle 1864 (7.6 in)
* Upper gun deck: 10 * Canon de 24 C modèle 1864 (9.4 in)
* Lower gun deck: empty

### Protection

The Magentas had a full-length waterline belt that consisted of wrought-iron plates 120 mm (4.7 in) thick. Above the belt both gun decks were protected with 109 mm (4.3 in) of armor, but the ends of the ships were unprotected.

## Construction and service

Solférino, named after the French victory in the Battle of Solferino, was laid down on 24 June 1859 by the Arsenal de Lorient, launched on 24 June 1861 and commissioned on 25 August 1862.

## Citations

* 1 2 3 4 5 6 7 Gille, p. 24
* 1 2 3 Campbell, p. 287
* 1 2 3 4 5 de Balincourt & Vincent-Bréchignac, p. 25
* 1 2 3 4 Silverstone, p. 62
* 1 2 3 Aide-Mémoire Ch 4-6 1873, p. 9 (pdf 407).
* ↑ Konstam, p. 19
* 1 2 Aide-Mémoire Ch 4-6 1873, p. 10 (pdf 408).
* ↑ Silverstone, p. 112