Keywords: Implacable (1867).jpg en The French floating battery Implacable was employed from 1880 to 1907 at Toulon as part of the School of Engineers École des Mécaniciens Here it is seen taking part in trials with observation balloons Collection Musée de la Marine Paris author 1885 Arrogante class floating battery Scanned with Canon Pixma MP550 PD-old-70-1923 |