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MARINE REVIEW. Vor. V. CLEVELAND, OHIO, THURSDAY, PEBRUAR YS 25; 1892: No. 9. Government Boats for Maine and Oregon. Two light-house tenders, the Lilac and Columbine, building at the yard of the Globe Iron Works Company, Cleveland, to go, respectively, to the First light-house district with headquarters at Portland, Me., and the 'I hirteenth district with headquarters at Portland, Ore., are described in the annual report of the light- house board just issued. 'These boats as they appear on the stocks at the yard of the Globe company are of great credit to the officers of the light-house board as well as the builders. They are duplicates, and it may be said of them in a general way ~ that the hulls are as fine in appearance as either of the costly steam yachts that left the stocks in Cleveland recently and their engines are as neatly built as anything ever turned out by the Globe company. 'They will prove good specimens on the Atlan- tic and Pacific coasts of the work of lake shipbuilders.. Another light-house tender for lake service, the steamer Amaranth, is form. the keelson and extend down to the skin of the vessel for three frame spaces, the floor plates on these frames being cut and securely rivited to the center keel-plate by angles 3 by 3 inches by 6 pounds. The side keelsons or girders will also run continuously, the floor plates and brackets between the girders being cut. This double bottom will be divided into four separate water-tight and independent compartments, each pro- vided with a sufficient number of manholes properly constructed and so located that access can be had at all times to every com- partment for cleaning and other purposes. 'There will be seven water-tight buldheads dividing the parts of each vessel above and forward, and abaft the double bottom, into eight water-tight compartments. The vessels will be built with a flat plate keel in double thicknesses and provided with an extra protective keel, also with one outside bilge keel on each side of the vessel. The vessels will be rigged as two-masted schooners, with pole top- | nearing completion at the yard of the Cleveland Ship Building Company, and four others, lightships for the Atlantic coast, des- cribed in Vol. 4 No. 7 of the REVIEW, are under way at the yard of F. W. Wheeler & Co., West Bay City, so that shortly after the spring opening seven boats will be turned over from lake builders to the light-house department, six of them going to the coast. The engraving shows the general plans of the Lilac and Columbine. 'I'he materialis Siemens-Martin mild steel, and the dimensions are: ; Feet. Inches. Length over all ........:.:sseeeeseeeeeeeee seeeteneeeeerees 155 oO Length from inside rudderpost to inside stem 145 O Beam molded..........---+++0+ asco cae iss 26 6 Depth of hold from top of beam to top of keel- eG eee cek caps ware g nota saerasisnee ens fork ta + 15 2 Depth of hold from top of beam to top of double bottom. ...........:.cscseceeeeseneeeeeeeeeees 12 4 The vessels will be fitted with a double bottom. Inside height of this double bottom, in the clear between plates amid- ship, will be 34 inches. The vertical center keel plate will run from end to end of the vessel, tapered forward and abaft the double bottom, to the height of keelsons at these places; it will masts, gaffs and derrick booms. Each will be supplied with a a steam windlass, steam hoisting engine, and the best appliances for handling anchors, buoys, and cargo or any other purpose required by the service. An electric plant for operating a search light and for illuminating all parts of the vessel will also be a feature of importance. There will be for each steamer one right-handed cast-iron screw propeller, about 9 feet 4 inches in diameter and of suitable pitch, driven by an inverted cylinder, surface condensing, fore- and-aft compound engine; the cylinders to be 22 and 41 inches in diameter, with a stroke of 30 inches. The steam will be fur- nished by two cylindrical single-ended boilers, 10 feet 8 inches in diameter and 10 feet 9 inches long, each fitted with corrugated _ furnaces. In addition to the necessary trials of the machinery at the dock a trial trip is also to be made of about twelve hours' dura- tion, or as may be directed by the light-house board, at the ex- pense of the contractor, and the engine must develop 600 indicated horse power when making 110 revolutions per minute, with a coal consumption of 214 pounds per indicated horse power, and steam, per guage, at 100 pounds pressure per square inch,