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July, 1910 TAE Marine REVIEW 287 THe BRAZILIAN BATTLESHIP SAO PAULO. Trials of the Brazilian Battleship HE trials of the new _ battle- ship Sao Paulo; built ,.by Messrs. Vickers, Son & Maxim, Ltd., Barrow -in- Furness, for the Brazilian Navy, have just been carried out with the most satis- factory results. She is a sister ship to the Minas Geraes, recently completed by Messrs. Armstrong, Whitworth & Co. The ships are alike in design, and the two firms have. succeeded -in meeting the strategical and tactical needs with a large measure of success, aS was clearly established during the trials. Notwithstanding that the draught of these vessels is limited, owing to the depth of water in South American waters, to 25 ft, a high fighting effici- €ncy has been achieved. The Ships have twelve 12-in. guns so disposed that eight can be fired ahead, fight astern, or ten on either beam. In Sao Paulo addition, there are twenty-two 4.7-in. guns and eight 3-pounders. Secondly, the broadside is protected right fore and aft; the thickness is 9 in. in the center part for the full depth of 22 ft. 4 in., including 5 ft. below the load water line. This thickness is re- duced to 6 in. forward and aft, and ultimately to 4 in. at the bow and stern; 9-in. athwartship bulkheads are located forward and aft at the ends of the 9-in. armor and protection against raking fire, while at the bow there is a 3-in. bulk- head, and at the stern a 4-in. bulkhead. TABLE I.--MEAN RESULTS OF ALL TRIALS. Six Full- S Speed Two- Mile Mile Runs, Runs, 48 Hours' Coal 30 Hours' 8 Hours' 250 1b. 280 Ib. Consumption Trial. Trial. Trial. Boiler Boiler Whole Mile Whole Mile Whole Mile Pres- Pres- Trial Runs. Trial. Runs. Trial. Runs. sure. sure. May 21, 22, 23, Wate or er oe i ee ess 1910 May 24, 25, 1910 May 28, 1910 May 30, 1910 Draught, forward.....-++-+++-- 25 f62 in. 29 ft. 24 ft. 5% in. 24 ft. 8 in. Dranght;, aft... ......5---+--- 25 ft. 53% in. 25 ft.3% in. 25 ft. 1% in. 24 ft. 10 in. Draught, mean.......-+-++++--: 25 ft. 3% in. 25 ft. 1% in. 24 ft. 9% in. 24 ft. 9in. Displacement.......--------: 5 19,645 19,460 19,133 19,110 Mean "i: ho pits eee aes 5 eZ AN 2,383 16,067 17,377 21,484 22,355 25,917 © 28,645 Mean revolutions ....--+-++-- 67:15. 67.52 127 129.8 138.7 140.85 145.59 150.85 Mean speed .....++--- knots 10.61 seas 19°893) ee sce 2099 21,231 21-623 Boilers in use.....---+-+--+-> : 5 18 18 i. 18 18 18 Coal consumption, lb. per it. D: