The arrangement of the guns enabled these vessels to be fought either end on, or on the broadside. Each was armed with twelve 70-pounder Whitworth guns. Two other powerful vessels were also built for Brazil at Birkenhead. One of the oddest naval encounters on record was fought in March, 1866, between a powerful Brazilian fleet and a Paraguayan vessel. The Brazilians had three of these ironclads, a single-turreted monitor, and several wooden ships. The Paraguayans opposed this armada with a barge mounting an 8-inch smooth-bore gun. The firing was fast, furious, and inaccurate. The smooth-bore made good practice. The Brazilians hit everything in range for some time except the one-gun barge. By dint of perseverance they struck it eventually and sunk it.[46] This glorious naval exploit was followed by another piece of daring, in which the Brazilian fleet engaged in a more or less uninterrupted encounter for three weeks with a fort mounting one gun; the fleet won. The last quarter of the nineteenth century saw not a little warlike activity in one part of the world and another in which the navies of the contestant powers were conspicuous. The naval engagements in the Russo-Turkish War were mainly remarkable for the regularity with which the Turkish warships were blown up by the Russians, the daring of Russian officers in making attack after attack, and the apparent disinclination of the Turkish officers to take adequate means to protect their vessels. Had the Turks been as vigilant as the Russians, the latter would hardly have scored so many brilliant successes. The South American Republics, too, were indulging in one of those periodical bursts of unrest and pugnacity which seem inseparable from South American States in their relations with each other, or in the administration of their internal affairs, and when carefully fomented may lead plotting politicians on to become dictators and the victims of assassinations--unless they are fortunate enough to retire to Paris with the spoils and live in luxury and die naturally.