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ELECTRICAL EQUIPMENT OF STEAMER MOMUS. It is a well-known fact that' on board ship, where every inch of Space counts, all generating apparatus, what- TAE Marine REVIEW being held firmly in place by steel rings shrunk on the commutator and insulated therefrom by mica bands of suitable thickness. Specially treated carbon brushes eliminate commutator FIG. 1--/5-K. W. CURTIS TURBINE GENERATING SETS, INSTALLED IN ENGINE ROOM OF STEAM- SHIP MOMUS. ever its nature, must above all pos- sess the feature of compactness. To no other part of the generating ap- paratus does this apply with more force than to the generating sets for electric light and power. The space usually reserved for the electrical ap- paratus is always comparatively small and at times totally inadequate for the proper handling of the apparatus. It is therefore not surprising that marine engineers are always eager to adopt any type of generating set that embodies compactness with the abil- ity to give reliable and satisfactory Operating with minimum attention. A noteworthy example of a modern ma- rine generating plant is found on board the steamship Momus, built for the Southern Pacific Co. of New York by William Cramp & Sons of Phila- delphia. The generating units as shown in Fig. 1 consist of two 75-kilowatt, 110 volt direct-current generators direct connected by means of flexible coup- lings to Curtis steam turbines of the horizontal type revolving at a speed of 2,400 revolutions per minute. Each turbine is of the two stage condens- ing type, each stage having two bucket wheels and one set of intermediate or fixed buckets. The turbines and gen- erators are each equipped with two bearings and each set is assembled on a rigid bed plate cast in one piece. The generators are of the four pole compound wound type and of the lat- est and most improved General Elec- tric design. On account of the high speed the commutators are of the shrink ning construction, the segments troubles and reduce brush friction to a minimum. With 250 Ibs. steam pressure, 28 in. of vacuum, and 100,degrees Fahr. superheat, the steam consumption at fill load=ic 25. bs. sbhice tipure is equivalent to about 16.5 lbs. per brake horsepower under the _ conditions given, BhesZ4o.elos. ate null load: sis expressed in pounds per kilowatt de- livered at the generator terminals, as- suming the generator efficiency at 90 per cent. The high speed of operation makes the question of lubrication a very in-. teresting one. All working parts of the valve gear, including the oil reser- voir on the hollow governor lever, are 67 and rings. The bearings are of the self-aligning, ball seated, babbit- lined type made in halves. Nothwith- standing the high speed, no vibration ts noticeable when these sets are run- ning under full load. A 10-kilowatt generating set, con- sisting of a General Electric marine type, 110-volt generator direct-con- nected to a single cylinder engine of the same make, furnishes power for the ordinary day load of the vessel when at sea and also is used when the vessel is discharging cargo at the docks. In Fig. II is shown a view of the switchboard. It is constructed of white marble and consists of three panels; the outside panel being for the 75-kilowatt sets while the inside panel is for the 10 kilowatt set. The switchboard is equipped with the necessary instruments, and the con- nections are so arranged that the 75- -- kilowatt sets may be run in parallel and any circuit may be connected to any Set. A searchlight is a necessity on board a coastwise vessel, and the im- portance and usefulness of this piece of electrical apparatus is not over- estimated. It serves to pick up buoys in channels, to signal between vessels at sea, and is very useful when the vessel is making a dock at night time. This vessel is equipped with a 24- - in. General Electric searchlight with pilot-house control. The light is in- stalled on top of the pilot house and projects a beam of light of sufficient intensity to render plainly discerni- ble on a clear, dark night a light colored object 10 x 20 ft. in size at a distance of not less than 5,000 FIG. 2--SWITCHBOARD INSTALLED IN ENGINE ROOM OF STEAMSHIP MOMUS. oiled by hand. The main bearings are furnished with oil under pressure from an oil pump on the end of the generator shaft. All four pillow blocks are provided with auxiliary oil wells yards. This type of lamp as shown in Fig. III is of the horizontal car- bon type and is designed for both hand and automatic feed. Besides furnishing power for light,