Cabral-class ironclad

The Cabral-class ironclads were a pair of iron-hulled, armored corvettes originally ordered by Paraguay in 1864, but were sold to Brazil when Paraguay defaulted on the payments. Configured as central-battery ironclads, they served during the 1864–70 War of the Triple Alliance between Brazil, Argentina and Uruguay against Paraguay.

Design and description
The ships were 160 ft long, had a beam of 35 ft and drafts of 11.75 - 12.1 ft. They displaced 1033 LT. The Cabral class had a pair of steam engines, each driving one propeller. The engines produced a total of 750 ihp and gave the ships a maximum speed of 10.5 kn. Their crew consisted of 125 officers and enlisted men.

Cabral was armed with two 70-pounder Whitworth rifled muzzle-loading guns and two smoothbore 68-pounder guns, while Colombo had four 120-pounder Whitworth guns. The ships had a complete waterline belt of wrought iron that ranged in thickness from 114 mm amidships to 76 mm at the ends of the ship.