Brazilian cruiser Bahia

Bahia sometime before her mid-1920s modernization, as indicated by her two funnels
History
Brazil
Name:	Bahia
Namesake:	The Brazilian state of Bahia
Builder:	Armstrong Whitworth
Yard number:	809
Laid down:	19 August 1907
Launched:	20 January 1909
Commissioned:	21 May 1910
Fate:	Sunk by an explosion, 4 July 1945
General characteristics (as built)
Class and type:	Bahia-class cruiser
Displacement:	3,100 tonnes (3,050 long tons; 3,420 short tons)
Length:	122.38 m (401.5 ft) oa 115.82 m (380.0 ft) pp
Beam:	11.89–11.91 m (39.0–39.1 ft)
Draft:	3.81 m (12.5 ft) forward 4.75 m (15.6 ft) amidships 4.42 m (14.5 ft) aft
Propulsion:	Five Parsons steam turbines, ten Yarrow boilers Coal normal 150 t (148 long tons; 165 short tons) Maximum 650 t (640 long tons; 717 short tons)
Speed:	27.016 knots (50.034 km/h; 31.089 mph) trial 25 knots (46 km/h; 29 mph) at full load
Endurance:	1,400 nautical miles (2,600 km; 1,600 mi) at 23.5 knots (43.5 km/h; 27.0 mph) 3,500 nautical miles (6,500 km; 4,000 mi) at 10 knots (19 km/h; 12 mph)
Complement:	320 to 357
Armament:	10 × 120 mm (4.724 in)/50 caliber, 6 × 3-pounder 47 mm (1.85 in)/50 caliber, 2 × 457 mm (18.0 in) torpedo tubes
Armor:	Deck: 19 mm (0.748 in) Conning tower: 76 mm (2.992 in)

Bahia was the lead ship of a two-vessel class of cruisers built for Brazil by the British company Armstrong Whitworth. In November 1910, just six months after her commissioning, crewmen aboard Bahia, Marechal Deodoro, Minas Geraes, and São Paulo mutinied, beginning the Revolta da Chibata (Revolt of the Lash). During the four-day rebellion, Brazil's capital city of Rio de Janeiro was held hostage by the possibility of a naval bombardment, leading the government to give in to the rebel demands, which included the abolition of flogging in the navy. During the First World War, Bahia and her sister ship Rio Grande do Sul were assigned to the Divisão Naval em Operações de Guerra (Naval Division in War Operations), the Brazilian Navy's main contribution in that conflict. Based out of Sierra Leone and Dakar, the squadron escorted convoys through an area believed to be heavily patrolled by U-boats.

In the mid-1920s, Bahia was extensively modernized. She received three new Brown–Curtis turbine engines and six new Thornycroft boilers, and, in the process, was converted from coal-burning to oil. The refit resulted in a striking aesthetic change, with the exhaust being trunked into three funnels instead of two. The armament was also modified; three 20 mm (0.79 in) Madsen guns, a 7 mm (0.28 in) Hotchkiss machine gun, and four 533 mm (21.0 in) torpedo tubes were added. In the 1930s, she served with government forces during multiple revolutions.