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58 rotary compressor, and by Lacy-Hul- bert & Co., Ltd., London, Reavell & Co., Ltd., Ipswich, and W. H. A. Rob- ertson & Co., Ltd., Bedford. The Ramsay Engineering Co., Ltd., London, showed a patent governor for marine steam engines and a more re- cent one for internal combustion en- gines. This firm is represented in America by Chas. Cory & Son., Inc., Varick Street, New York. The Mac- lachlan Automatic Boat Davit Co., Ltd., Glasgow, exhibited a working model of their gravity davits which can be operated by one man. Ben- jamin R. Vickers & Sons, Ltd., Leeds, showed their propeller box. A. Har- per, Sons & Bean, Ltd., Dudley, worked the Hele-Shaw Beacham vari- able hydraulic transmission which they manufacture. The Birmingham Small’ Arms Co., Ltd., Birmingham, exhibited their line throwing guns, both the shoulder pattern and the mounted type. The Light Buoyant Apparatus Co., Ltd., exhibited various types of rafts and floats. Fine Aids to Navigation There were several exhibits of nau- tical instruments and special acces- sories. Kelvin Bottomley & Baird, Ltd., Glasgow, displayed their Kelvite compasses and _ sounding. machines, their stability indicator and many appliances for the engine room. The Sperry Gyroscope Co., Ltd., London, showed a new two-unit gyro pilot with a separate contact unit which is on the bridge and the power unit connected direct to the throttle on the steering engine. A working model of the Sperry gyro ship sta- bilizer also was displayed. S. G. Brown, Ltd., North Acton, London, had a gyro compass of British de- sign, with liquid control and three separate and distinct types of re- peaters. By a patented device the steering repeater magnifies any move- ment of the ship four times. Indicat- ing and recording instruments were MARINE REVIEW displayed by Negretti and Zambra, London. A very complete exhibit was that of Siemens Brothers & Co., Ltd., Woolwich, who showed electrically controlled ship’s telegraphs, revolution indicators, helm indicators, a look-out transmitter whereby the look-out man on the vessel can signal to the bridge the position of any object he observes, navigation lights indicators, torsion- meters of the Hopkinson-Thring type and of the Ford type, loud-speaking telephones and wireless apparatus. The Cambridge Instrument Co., Ltd., London, showed among other exhibits a newly developed combined electrical CO 2 and CO apparatus, metal cased recorders giving six separate records on one chart, electrical distance ther- mometer outfits, the “Easy-to-read” dial thermometers, and automatic tem- perature regulators. This firm has an affiliated American company at 8512 Grand Central Terminal, New York City. Henry Hughes & Son, Ltd., London, displayed the echo sounding apparatus. British admir- alty patent, the dead beat compass, and sextants, ships’ clocks, binoculars and telescopes. Richard Klinger, Ltd., London, showed several of their pat- ent features including a self-aligning reflex water gage, seatless valves, gage tightening cocks for high pres- sure, and a continuous sight feed lu- bricating pump. The Marconi Inter- national Marine Communication Co., Ltd., showed several sets of wireless apparatus for use on board ship. Various other classes of exhibits in- cluded trucks and electric tipping wagons for dock purposes, paints and painting equipment, welding and metal-cutting apparatus, pneumatic and electric tools for scaling and other purposes, electrical machinery and ac- cessories, lighting plants, special met- al bearings, packing, castings of steel, iron and nonferrous metals, beds and cabin fittings. SUI nnn neastttscenntccnccttciate ce | Diesel-Electri 7 : 1esel~Llectric Applied : : To Dredge and Barge on Great Lakes E N interesting and unusual craft, the diesel electric twin screw, self-propelled, sea-going hopper dredge SANDMASTER owned by _ the Construction Materials Co., Chicago, nearing completion by the Interlake Engineering Co., Cleveland, went into drydock at the American Shipbuilding Co.’s Cleveland plant during the last sal AUN Te two weeks of December to have boss- ing, struts, two propellers and rudder fitted and installed. This vessel has been converted from » a lake type of ocean cargo ship. She will carry 3000 tons of sand and will be equipped for self loading and self unloading at the rate of 2000 tons per hour and it will be possible to dis- January, 1926 charge through a pipe line one and one-half miles from the ship’s side. Power for all machinery for loading, unloading and propulsion is electric. When completed this ship will be the most powerful, the largest and undoubtedly, the best and most modern vessel of its class in the world. It is understood that the cost of the SAND- MASTER ready to load sand will be nearly $1,000,000. A detailed descrip- tion fully illustrated, will appear in a later issue of MARINE REVIEW, after the vessel has been fully completed. Self-Unloading Barge Conversion of the 7000 tons steel barge CONSTITUTION, owned by the Pringle Barge Line Co., Cleveland, in- to a self-unloading conveyor vessel, not self-propelled but equipped with diesel electric power, is under way at the Kraft Shipyard & Drydock Co., South Chicago. The installation is a new design invented and patented by J. A. Sensibar, president of the Con- struction Materials Co., Chicago. Expectations are that this job will be completed in time for the opening of navigation in 1926. The vessel is to have a 180-foot outboard conveyor boom with a capacity of 1000 tons per hour for coal, gravel, stone, grain and other bulk freight. Power will be furnished by two diesel electric gen- erating units. It is hoped that later on when nearing completion, an illus- trated description of this interesting job can be published. Freighter To Be Launched The American Shipbuilding Co., Lo- rain, expects to launch the first of the two 600-foot steamers building for the Inter-Lake Steamship Co., on Satur- day, Jan. 16. This vessel will be christened in honor of Col. James Pickands. The second steamer named for Samuel Mather it is expected will be launched Jan. 80. Named Superintendent Isaac De Young has been appointed superintendent of the United States canal at the Soo, succeeding L. C. Sabin who was recently elected vice president of the Lake Carriers. Mr. De Young assisted Mr. Sabin for a number of years and has been con- nected with the engineering office at the Soo since 1901. Callaghan Shipping Co., Inc., steam- ship and chartering agents, 17 Bat- tery place, have succeeded to the business formerly operated by Calla- ghan, Atkinson Co., Ine.