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1903.] MARINE REVIEW AND MARINE RECORD. : 25 and form the forward and after limits of the side armor between the main and gun decks. Above the gun deck in wake of the 3-in. battery, 2-in. nickel steel is fitted. The 6-in. guns on the gun deck are isolated by splinter bulkheads of 114 in. nickel steel extending continuously across the ship, and 2-in. nickel. steel extending fore and aft. The 1o-in. turrets are protected by 9 in. of armor on the sloping face, 7 in. of armor on the sides, 5 in. in the rear and with top plates of 2/2 in. nickel steel. The barbette armor is WASHINGTON AS THEY WILL APPEAR WHEN COMPLETED. 7 in. thick in front, reduced to a thickness of 4 in. at the back and below the gun deck where protected by the belt and casement armor. The protective deck which extends from bow to stern, will be 114 in. thick on the flat over the engine and boiler spaces, -4 in. thick on the slopes at the side, extending down to the bot- tom of the belt armor, 3 in. on the slope, forward and aft. aA cofferdam 30 in. thick will be worked from end to end of the vessel between the protective and berth decks. The armament will be as follows: The main battery will consist of four 10-in. breech loading rifles and sixteen °6-in. breech loading rifles. ':e secondary battery will have twentv- three 3-in. rapid-fire guns, twelve 3-pounder semi-automatic guns, two I-pounder automatic guns, two 1-pounder rapid-fire guns, two 3-in. field pieces, two machine guns of .30 caliber and six automatic guns of .30 caliber. The 10-in. guns will be mounted in two elliptical, balanced turrets protected by armor as described, and they will be under complete electrical control as will also be their hoists and their loading and training mech- anism. 'The 6-in. guns will be mounted four in inde- pendent armored casements on the main deck, the re- mainder in broadside on the gun deck, all on pedestal mounts, the back and side plates of the casements on main deck being of 2-in. nickel .steel. At each end of -the' vessel four: of the 6-in. guns can be trained. directly ahead» or: .directly astern respectively, so that it is possible -to «obtain. a direct ahead fire with the main. battery of two 10-in. guns-and four 6-in. guns, and the same number at the stern, The 3-in. guns will | be mounted as follows: Six in sponsons on the gun deck, six in - broadside .on the gun deck and ten -in broadside on the main deck. The 3-pounders and smaller guns: are mounted on the upper deck, bridges and-in the tops. = under atts _ The ammunition and shell rooms ate so arranged that one-half the total. supply of ammunition will be carried at. each end of the ship. With the increase in bat- tery special care has been required in developing these designs to secure an. ade- quate rate. of supply of ammunition from the maga- zines to the guns. For handling 6-in. and 3-in. ammunition the ships have been provided with a cen- tral passage extending com- pletely from. the forward to the after magazines, and four side passages at each end to extend a_ sufficient distance forward and aft to provide for handling the -ammunition within the ar- mor protection on the decks above. All of these pas- sages are at the level of the upper deck platform and such quantity of both 6-in. and 3-in. ammunition is stowed at this level as would probably be required in any action. The remain- ing ammunition is stowed where it can readily be whipped, up by hand when time is available from. the lower to the upper platform. For handling ammuni- tion along the central pas- sage there will be ammuni- tion conveyors, which are nothing more than traveling platforms onto. which am- munition can be loaded at one end and_ delivered abreast the various ammu- nition hoists at different points in its travel. Provision has been made b~ means of power hoists to handle the 6-in., 3-in. and 3-pounder ammuni- tion at the rate of seven pieces per minute. ae The propelling engines will be of the vertical, twin-screw, four-cylinder, triple-expansion type of a combined indicated [From the Scientific American. horse power of 23,000. The steam pressure will be 250 lbs. and the stroke 4 ft. The engines will be located in two separate watertight compartments. Steam will be supplied by a battery of Babcock & Wilcox boilers,