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[Page 13-14]

                        [drawing of the ship]

[Page 15]

                       

8” turrets                    The 8” turrets are placed above the 13” turrets and are rigidly fixed to them. They are less elliptical than the 13” turrets and are placed back of the center of the turrets they rest on. They are 11” thick in front and 9” thick behind; the tops are 2” thick.

Protective Deck           The Protective Deck extends the entire length of the ship. Over the parallel middle body the protective and berth decks are coincident, but from here forward and aft the protective deck becomes turtleback, sloping down towards the ends and sides of the ship. Amidships the protective deck is composed of two 20 lb and one 70 lb plate, being 2-3/4 inches thick. From the stern to the five-inch vertical thwart-ship bulkhead, the protective deck is sloped about twelve feet inboard, and all this portion forward of the 5-inch bulkhead is four inches thick. Also from the after 5-inch bulkhead the sloping protective deck is four inches thick. All hatches are fitted with air-tight armored doors, the same thickness as the deck. The engine room hatches, the openings for the funnels and masts are fitted with armored gratings. These consist of steel bars, four inches wide and one inch thick, placed edgewise to form a latticework covering the entire opening.

Cofferdams                 Inside of the main belt from frame 28 forward and aft from where the belt discontinues is worked a steel framework is packed tight with cellulose, compressed corn-pith; this cofferdam[i] has its middle at the waterline. If penetrated by a projectile the cellulose swells up when soaked with water and stops the leak. The cellulose is hydraulically compressed in cubes six inches long and is further pressed when placed in the cofferdams. Cofferdams are also placed behind the casemate armor to a height of three feet, openings being left for the torpedo tubes. There are cofferdams around the masts and funnels where they pass through the protective deck.

[Page 17]

Battery             4 – 13” guns. Angle of train 13.5º both sides of fore & aft line

                        4 – 8” guns. Angle of train 13.5º both sides of fore & aft line

                        14 – 5” guns. Angle of train 45º both sides of the forward & abaft beam

                        20 – 6 pdrs; 4 – 1 pdr automatic; 4 colt’s machine; 2 – 3 in field guns

                        4 above water broadside torpedo tubes

                       

13” guns                     The 13” gun carriages are cast in two pieces, which are fitted together with lap-joints and bolted. On the inside are eight brass friction rings about four inches wide, placed at intervals along the barrel of the slide, the carriage acting as a combined sleeve and oscillating slide. These friction rings are in halves and are placed in the sleeve before its two parts are bolted together. On each half of the sleeve are cast six lugs for its two piston recoil cylinders, which are secured in place by iron bands similar to cap squares.

                                    The trunnions are cast on the lower half of the sleeve. The gun is guided in recoil by a guide feather on its top working in a slot in the upper half of the sleeve.

                                    The side brackets are cast in one piece, and are bolted to heavy 5” steel beams or girders running longitudinally in the turret. There are four of these beams, they are four feet deep, and each gun rests on two of them.

[Page 18]

13” Guns Elevating Gear

                      

                        To support the elevating gear, a frame (A) is rigidly fixed, sloping away from the muzzle of the gun. A screw (B) is fixed to turn in this frame. At the upper end of the screw is a bevel wheel (C), which turns the screw by feather in its boss. A block (E) moves up and down as the screw is turned, sliding in the guides of the frame. From the sliding block, rods (F) are led to the gun sleeve. When the rods are pushed up, the gun is elevated; turning the screw in such a direction as to screw down the block, pulls down the rods, and depresses the gun. (D) is a dash-pot to take the jump of the gun. (G) is operated by hand lever and cog chain.

13” Ammunition Hoists

                                    A support for ammunition car railways extends down from the turret to the bottom of the handling room. It is fixed to the turret and turns with it, being supported on rails in the handling room. Locked to it, so as to turn with it, are ammunition handling cars, on the floor of the handling room. The projectiles are lifted from the piles in the shell rooms by a differential pulley running on an overhead trolley and placed on the handling cars. From these they are shoved onto the ammunition cars and hoisted to the turrets. The cars turning with the turret cause the projectiles to be always pointed fair for the bore of the gun. The eight inch handling room is on the Splinter Deck just above the thirteen inch handling room on the Platform Deck. The eight inch ammunition car goes up through the thirteen inch to the eight inch turret. The hoists are worked by electric motors, the steel wire rope being wound upon a drum. An electric telescopic rammer is used for the 13” charges, the 8” charges are rammed home by hand.

[Page 19]

5” Ammunition Hoists

                                    The electric ammunition hoists are constructed of a metal casing, or trunk, inclined at an angle of 75º. This casing passes from the ammunition room to an opening in the deck near the gun. The casing is divided longitudinally in two parts. Two chains, with cogged links, pass up in front and down behind the dividing section, over cog wheels. The cogs at the bottom are directly connected with a motor. There is a pair at the top and intermediate cog wheels for guides. At intervals the chains are connected with a crosspiece, from which projections form a platform on which a box of ammunition rests, leaning at the same time against the dividing section. The motor turns the two lower cogs, and they set the chains in motion. The bottom of the hoist is fixed so that a box of ammunition will slide easily into place, and the next approaching platform take it up. At the top hatch of the hoist and at intervals along its length are pawls which are raised when the box passes, and, falling back into place prevent the box slipping down the hoist should it get caught on the way up. At the top the box is dumped on rollers and rolls to the deck. The empty or unused boxes are sent below by reversing the motors. Should the motors fail the hoists may be operated by hand.

[Page 20]

Anchor engine             The anchor engine is placed in a compartment raised above the Berth Deck, forward of the forward barbette, and extending up above the Main Deck about three feet. It is a double expansion steam engine which gears by means of a worm (A) with the large worm wheel (B) and also with the wheel (C) (which turns the cat and fish winch) immediately above. The wild-cat (D) has a break (E) consisting of a steal band in a cast iron groove; the band is compressed by a lever worked by a screw. (F) is a hollow cylinder fixed to (D). (G) is a cylinder fixed to (B), and turning partly within (F). On (G) are two screw threads (H) and a similar one on the other side, In the threads slide the chocks (I). The figure shows the wild-cat linked to the worm wheel. To disconnect them, a hand lever is inserted in one of the holes in (G) and it is turned until the chock (I) is screwed to the inner side of (G) and out of the notch in (F). (B) may then turn without (F) to heave in chain on the other side; or (D) is free to veer. An exactly similar wildcat in on the left of (B), and at (K) are supports.

                                    The two chains bent to the bower anchors are habitually left on the wild cats ready to heave or veer. There are two sheet anchor cables whose pipes are covered with hatches at such side of the anchor engine house on the Forecastle.

 



[i] a watertight structure for making repairs below the waterline of a ship

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