Minas Gerais firing a full broadside
<p>Illustration of a painting by Charles J. De Lacy, in 1910. Depicting the Brazilean battleship Minas Geraes firing a full broadside. In the background far left is her sister ship the São Paulo. Both ships simutaneously fired a full broadside.
</p><p>Showing Her Whole Set of Teeth: The Full Broadside of One of the Brazilian Battleships Fired Simultaneously.
</p><p>The heaviest broadside ever fired by a battleship: 9013 lb. weight of shot discharged at the same moment. Drawn by Charles John De Lacy, from materials supplied by W. G. Armstrong, Whitworh and Co.
Publication date: Saturday,  July 30, 1910. The Illustrated London News (London, England). Volume: 137 , Issue: 3719
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Minas Geraes' gun trials; the illustration commemorates when the ship's ten 12-inch guns were trained to port to fire a full broadside. A Scientific American article of 1910 (with a photograph of a similar scene) remarked that this was "the greatest broadside ever fired from a battleship."
<bdi><a href="https://en.wikipedia.org/wiki/en:Charles_de_Lacy" class="extiw" title="w:en:Charles de Lacy"><span title="British artist">Charles de Lacy</span></a>
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30 July 1910<div style="display: none;">date QS:P571,+1910-07-30T00:00:00Z/11</div>
The Illustrated London News