Battleship Redoutable conducting gunnery trials.
The monster in view is a Canon de 270mm Modele 1875 naval gun.
Battleships Redoutable, Devastation, Amiral Duperre plus assorted cruisers at anchor.
Redoutable was a central battery and barbette ship of the French Navy.
In Saigon, Indochina, after the Boxer rebellion.