The Niagara Falls Park

1885 Scientific American  
is reason to believe, attain a maximum speed of 27 miles an hour. The engines will be made to develop 850 indicated horse power. This armament will consist of two tubes in the bow for discharging torpedoes, two Nordenfelt machine guns in shell-proof turrets and shields, and two Hotchkiss guns of the same character.
doi:10.1038/scientificamerican06061885-353 fatcat:z2gnregforcthcjas4ymamimem