Brazilian monitor Bahia

Bahia was an iron-hulled, single-turret river monitor. She was 175 feet 8 inches (53.5 m) long between perpendiculars. The ship had a beam of 35 feet 2 inches (10.7 m) and a maximum draft of 7 feet 9 inches (2.4 m). Bahia displaced 928 long tons (943 t)[1] and was fitted with a ram bow. Her crew consisted of 125 officers and enlisted men.[2] The ship had a pair of horizontal trunk steam engines, each driving one propeller, using steam from two boilers. The engines produced a total of 1,640 indicated horsepower (1,220 kW) and gave Bahia a maximum speed of 10 knots (19 km/h; 12 mph). She was barque-rigged with three pole masts and a bowsprit.[1]

Bahia was armed with a pair of 120-pounder Whitworth rifled muzzle-loading guns. She had a complete waterline belt of wrought iron that ranged in thickness from 4.5 inches (114 mm) amidships to 3 inches (76 mm) at the ends of the ship. The gun turret was protected by 5.5 inches (140 mm) of armor. Both the belt and casemate armor were backed by 230 millimeters (9.1 in) of wood.[1]

Bahia, named after the epynomous Brazilian state, was originally ordered by Paraguay from the British shipbuilding firm of Laird Brothers and was laid down in 1864 with the name of Minerva[3] and the yard number 326 at their Birkenhead shipyard.[4] She was purchased by Brazil the following year, after the start of the war when Paraguay was cut off from the outside world and could no longer make payments. The ship was launched on 11 June 1865 and completed on 22 January 1866.[3] On 19 February 1868 together with five other Brazilian ironclad warships she took part in the Passage of Humaitá.

Bahia was refitted in 1887 during which her boilers were replaced and a bridge was added between the turret and the funnel.[5]

• Davis, William H. (1977). "Question 1/77". Warship International. XIV (2): 161–172. ISSN 0043-0374.
• Gardiner, Robert, ed. (1979). Conway's All the World's Fighting Ships 1860–1905. Greenwich: Conway Maritime Press. ISBN 0-8317-0302-4.
• Gratz, George A. (1999). "The Brazilian Imperial Navy Ironclads, 1865–1874". In Preston, Antony (ed.). Warship 1999–2000. London: Conway Maritime Press. ISBN 0-85177-724-4.
• Gratz, George A. (1998). "Question 1/77: Warships of the Triple Alliance". Warship International. XXXV (2): 210–211. ISSN 0043-0374.
• Holley, Alexander Lyman (1865). A Treatise on Ordnance and Armor. New York: D. Van Nostrand.
• Silverstone, Paul H. (1984). Directory of the World's Capital Ships. New York: Hippocrene Books. ISBN 0-88254-979-0.
• Wood, Gerald L.; Somvervell, Philip & Maber, John (1986). "The Ironclad Turret Ship Huascar, Pt. I". In Lambert, Andrew (ed.). Warship X. London: Conway Maritime Press. pp. 2–11. ISBN 0-85177-449-0.

• Brief history of Bahia (in Portuguese)