This is a photograph of the British 3rd Class Protected Cruiser Marathon. The Marathon was armed with 6-6in/25 guns. These were originally BL guns, not QF. The Marathon was nominally a 2,950 ton ship with a 2in protective deck. This photograph dates sometime prior to 1904. The ship much must be painted for tropical service.
this nice photograph of a sister ship, the Magicienne.