IX. NAVAL ARCHITECTURE, ETC. 529 



The ship's dimensions are 



Length - 278 feet. 



Breadth - 40 feet 2 inches. 



Depth - - 24 feet. 



Tons - - gross 1,814 



iiett 1,757 



She is classed at Lloyd's - 100 A i. 



Sectional Models (three in number), showing various 

 methods carried out by Messrs. Short Brothers in building ships on 

 the composite principle. Short Brothers. 



Model No. 1 illustrates a method of diagonal bracing both for the framing 

 and deck beams of composite vessels. 



Model No. 2 illustrates a trial of filling in between the ship's frame with 

 vertical iron plating. 



Model No. 3 illustrates the iron framing of a composite ship with improved 

 stringers for tying the framing, and carrying the beams. 



2178hw. Photograph from a painting of the paddle 

 steamer ** lona," 1874, compared with the " Comet," the first 

 steamer on the Clyde. The Institute of Naval Architects. 



2173hx. Model of the " Shakespeare," a four-masted 

 sailing ship, and three sections illustrating composite construction. 



Messrs. Short Bros. 



2178xy. Set of Annual Reports and Proceedings of 

 the Institution of Naval Architects, 1860 to 1875. 



Institution of Naval Architects. 



2179. Model of J. Ericsson's Screw Propeller Engines, 



applied to the American and Swedish Monitors, patented in 

 America in 1858. 



II. M. Commissioners of Patents ~ 



2130. Models of Screw Propellers. 



The Council of King's College^ London.. 



2167a. Peraon, for automatically fixing the course of a ship, 

 and for use with the bathometer. Dr. F. Schopfleuthner, Vienna. 



This apparatus replaces the compass and tiller of a ship, as when it has 

 once been arranged for a particular course the ship is compelled accurately to 

 follow that course, at the same time that it enables any tacking or turning to 

 be executed with great ease and precision. This peculiarly constructed compass 

 is fitted with hand-wheel and vernier, and by means of it the whole ship can 

 be directed as required. The declination- needle, of Avhich the arc of oscil- 

 lation is very small, turns between the two movable electrodes of an electrical 

 battery, which on coming into contact with the magnetic needle control the 

 movement either backwards or forwards of the admission valve of a steam or 

 hydraulic motor. This acts on the steering-gear, and when that is turned to 

 its extreme point (which only occurs in turning the ship) its cuts off the 

 admission, so as to avoid breakage. 



40075. L 1 



