Armored belt, double-turreted iron-clads with full sail-power. These vessels are high sided, the high rail between the fore and mizzen masts dropping to unmask the turrets. The armor-belt encircles them. They have strengthened ram bows, a long, high forecastle extending to the fore-mast and making a dead-angle for the forward turret, and a high poop to the mizzen-mast, making a dead-angle for the after turret. The fore and main masts are tripod masts. These vessels are bark rigged, with full sail-power, and when their side rails are up they have the appearance of ordinary corvettes. They were built for the Confederates during the war of the American Rebellion. VIPER. VIXEN. WATERWITCH. Casemated gun-boats. These vessels have rectangular casemates about the boilers and engines (see Inflexible), the forward bulkhead rising above the spar-deck level, and being provided with two ports for bow-fire. They are only intended for bow-fire and end-on attack. The Waterwitch is a double-ender, having steering-gear at each end, and at present, instead of steam boilers and engines, she has a hydraulic motor. POLYPHEMUS. Armored ram The transverse section of this ship is top-shaped, showing above water a convex upper deck surmounted by a light musket-proof superstructure. In addition to her heavy ram, she is provided with apparatus for firing the Whitehead torpedo, ahead and from each beam. EREBUS. Old-type casemated floating battery, completely armored. [Illustration: WYVERN.] ENGLISH UNARMORED FLEET. (NEW CRUISERS.)