Contemporary lithograph of the competition between the propeller-driven <a href="https://en.wikipedia.org/wiki/HMS_Rattler_(1843)" class="extiw" title="en:HMS Rattler (1843)"><i>Rattler</i></a> (left) and paddle-driven <a href="https://en.wikipedia.org/wiki/HMS_Alecto_(1839)" class="extiw" title="en:HMS Alecto (1839)"><i>Alecto</i></a> (right) in 1845
Unattributed.
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