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16 => A242 KR 4 Sf SHALLOW-DRAUGHT STEAMER FOR MEXICO. The Racine Boat Mfg. Co., Muskegon, Mich., is building a twin-screw, shallow-draught steamer for service in Mexico. The steamer will be 70 ft. over all, 13 ft. moulded beam, 14 ft. extra beam and will have a draught, when loaded with 15 tons, of 26 in. The hull will be of steel and will be built in sections to facilitate shipping, as it is to be erected at the port of destination. All shell plates will be galvanized and the deck will be of 2-in. southern pine made over steel beams. The cabin will be built entirely of clear southern cypress and will comprise a small toilet room, galley and saloon, as shown on the diagram, and like the hull will be built in suitable sections so as to facilitate shipping. The saloon will be Rf. Vt Bow OOOO RACING LAUNCH NAPIER II. Considerable interest attaches to Mr. S. F. Edge's new rac- ing launch Napier II. While she is essentially a speed launch she is built in a most substantial manner. The hull was de- signed and built by Yarrow & Co. at Poplar and the engines were supplied by D. Napier & Son of Acton, the whole work being carried out under S. F. Edges, Ltd., 14 New Burlington street, London, W. The launch is 40 ft. over all, 4o ft.. water line and 15 ft. beam. : The hull is constructed of steel throughout, varying in thick- ness from 16 B. W. G. to 20 B. W. G., in accordance with the circumstances. the decks are steel, and the rudder and "A" brackets are steel forgings. The motors, which are Napier Toilet Settee ockersunder. Mieo. - 1) ' Extensions for Berths a | Capen ree Ree Engine Room | Cargo O 3| Galley Paleon Boiler Hatch ud sg etoumone or Bertae' | GD i | be per Reltes Lockermunden 8 lb ra MARINE REVIEW TWIN-SCREW, SHALLOW-DRAUGHT STEAMER FOR MEXICO. arranged with long settees on either side which will be pro- vided with extensions to give sleeping accommodations to the crew. As will be noted from the drawing the machinery is set approximately amidships in an opening through the deck surrounded by a steel coaming 25 in. in length. This coam- ing extenas over the boiler, forming a complete hood and sup- ports the outside smoke stack. The machinery equipment consists of a pair of fore and aft high-speed compound engines operating twin screws, water-tube boiler and all the necessary appliances to fit the boat for salt water work. The engines will have cylinder dimensions of 9 in. with a com- mon stroke of 6 in. The condenser will be of a sectional out- board type' with copper tubes brazed into naval bronze headers with suitaite connections passing through the hull to receive the exhaust from engines and pump suction. The condenser will be hung in such a manner as to be thoroughly protected by the hull and is placed in the forward end of the tunnels. The upper deck will be built of clear white cedar laid over white oak beams and supported upon stanchions with suitable girders and stiffeners. The entire upper deck will be enclosed with a double pipe railing. Passengers on the upper deck will be protected from the rays of the sun by a light sun shade made of cedar and laid over oak beams, supported on stanchions. The steamer will have a complete equipment of life saving apparatus and ten- ders and her home port will be Frantera, Mexico. The owners have named the craft Macuspana. marine-racing type, of 73H. P:, are carried' on'a substantial girder run fore and aft of the boat, and are also attached to the side of the boat on special frames. Thus the boat and motors are absolutely tied together, and experience has demonstrated that this method of securing motors and thrust block is quite satisfactory. The reverse gear for the starboard engine (the boat is fitted with twin screws) and the thrust bearings of both engines are in metal box-shaped casings, also secured to the engine girders. These boxes are filled with oil, and are quite watertight, which enables the bearings, especially the thrust bearing, to run entirely submerged in oil. The engines are connected to the shaft by Napier metal to metal marine clutches, which run in oil, and are operated by pedals, actuated by the steersman, thus giving him entire con- trol of the launch. The exhaust is the Napier water-jacketed exhaust system, and the exhaust receivers and pipes are quite cool throughout their whole length. The after-part of the boat is bulkheaded off, and the ex- haust pipes terminate through this bulkhead, and the exhaust gases, in the form of cooled vapor, emerge from two cowls without any noise, which is of great advantage both to specta- tors and operators of a racing launch, and moreover prevents the boat from being absolutely impracticable on account of the noise. The water is circulated by two pumps for each engine, which, by means of transfer pipes and cocks, can be connected together should one circuit go wrong. One pump serves to supply the water-jacket of the engine and the other pump sup-