An item dealing with the 7 main gun turrets of the Brazilian battleship Rio de Janeiro supplied more details about the range of the turrets. Turrets 1 and 7 290 degrees, turrets 2 and 60 300 degrees, which were super firing over turrets 1 and 5&7, turrets 3 and 4 230 degrees and turret 5 240 degrees, meaning an angle of 110 degrees at both sides with all main guns. The secondary armament of 20-15cm/5.9” was such arranged making it possible to fire straight with 6 guns, between 1-20 degrees with 3 guns, 20-30 degrees with 4 guns, 30-60 degrees with 7 guns, 60-120 degrees with all guns, 120-140 degrees with 7 guns, 140-150 degrees with 6 guns, 150-170 degrees with 3 guns and straight aft with 6 guns.(1)
Note
1. She was ordered by the Brazilian cabinet in 1911 to be built by Armstrong Whitworth, England, laid down with yard number 792 on 14 September 1911, launched on 22 January 1913, becoming unnecessary to the changing Brazilian economy and the improved relations with Argentina, sold to Turkey still uncompleted in December 1913, renamed Sultan Osman-I-Evvel, seized when the First World War broke out by the British cabinet on 3 August 1914, commissioned as the HMS Agincourt on 7 August 1914, decommissioned in April 1921, sold in 1922 and finally broken up in 1924. Preceded by the Minas Geraes-class and succeeded by the never realized Riachuelo.
