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Y Z Details on an Interesting Craft Designed for Bay Service —A Six-Cylinder Diesel Engine Furnishes the Power F. DUTHIE & CO., Seattle, are J constructing a motor-driven ® ferry boat for the port of Seat- tle from plans drawn by Lee & Brin- ton, naval architects, Seattle. The vessel will be of the double-ended ferry-boat type, 100 feet long, 28 feet beam and 10 feet deep. The boat is designed for passengers only and the two decks will be given over to their use. On the main deck will be lo- cated cabins for men and women and accommodations will be provided for 300. The scantlings called for in the specifications of the hull are up to the requirements of the American Bu- that the vessel will have her deck well above water with any one com- partment flooded and the vessel will not sink if all are flooded. The hull is to be salted and care has been taken in the design so that all parts are ventilated. Plenty of Windows The cabins are well lighted from large sash on the side and from a sky- light at the center running the full length of the house. Life preservers are placed over the seats in the cab- ins and in boxes on the decks. Com- panionways will lead from each end of the deck house to the upper deck. ag I= = aS Saat a —— lines will have three outlets, one at each end of the main deck and one on the upper deck about amidships. There will be, in addition to the fire pump, two’ brass-lined hand pumps which may be used’ either for fire purposes or for pumping out the bilge. For heating the boat in cold weather there will be a small boiler using kerosene for fuel; hot water ra- diators are placed in the cabins, toilet rooms and pilot houses. <All sea valves are bolted to a cast iron sea- chest. This is covered with a galvan- ized strainer. A heavy piece of zine is bolted inside of the chest and it may be renewed any time the vessel fh errr ree id didi FIG. 1—PROFILE OF MOTOR-DRIVEN FERRY FOR PORT OF SEATTLE reau of Shipping. The propeller posts and shaft logs are oak. The rubbing strip on the bottom of the keel and the guard are iron bark. All other lumber in the hull is fir, treated with carbolinium. All longitudinal mem- bers have locked scarphs and run in long lengths; some of these members are in one piece 90 feet long. The floor timbers and frames are double, sawn from 5-inch flitch, molded at the foot’ 10 inches. and at the deck 6 inches. The keel is 12 x 12 inches, the clamps 4 inches and the ceiling and planking 3 inches. Screw bolts are used for fastenings in all clamps, keelsons, etc. There are two trusses which are run the full length of the vessel. The engine logs are 18 x 18 inches and 47 feet long. There are four bulkheads dividing the vessel into five watertight com- partments. These are so arranged give a All interior finish will be simple and plain. The vessel will be propelled with a 6-cylinder 9 x 13-inch two-cycle Southwark-Harris diesel engine, de- veloping 225 brake-horsepower at 300 revolutions per minute, which should speed of nearly 10 knots. There will be a propeller at each end connected to the engine through fric- tion clutches, but the stern wheel only will be driven except when making a landing. This method was adopted on account of the large amount of drift wood usually afloat in the bay; the forward wheel is allowed to run idle when not coupled. A two-cylinder San _ Francisco Standard gas engine of 8 horsepower will be installed as an auxiliary. To it will be connected the auxiliary air compressor, the electric generator and the fire and bilge pump. The fire 221 is hauled from the water. Electricity will be used for lighting the boat.. The lamps are of the semi-direct type working under a pressure of 115 volts, supplied from a 3-kilowatt General Electric dynamo. There will also be a low-voltage system for use in case of accident to the main system. Cur- rent for this will be obtained from ‘an Edison storage battery working under six volts pressure. This bat- tery will be wired in series with the main lamps so it will be kept con- stantly charged. There are two toilet rooms, one for women and one for men. Water for the sanitary system will be pumped from the sea to the supply tank by the bilge pump on the main engine. The water closets will be of the syphon jet low pressure type fitted for salt water service. Esti-