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the galley equipment. 200 Each ship galley is to be equipped with one range 8 feet long, with two fires and two ovens; one 40-gallon hot water boiler; one 2-compartment vegetable cooker with cast iron doors and gal- vanized perforated steaming baskets for each chamber. The pantry will have one combination steam table and plate warmer, and. one 50-pound ice capacity refrigerator. ~The cap- tain's cabin' will be equipped with a brass. bed. .The 51. berths for the crew will be of steel tube frame construction, chilled joints, lee rails when standing clear of hangers of malleable iron. The berths are to be equipped with «galvanized finish fabric with helical springs at each end and two such springs on .each side. Twelve of these berths are to be white enamel finish and the remainder aluminum bronze. How Turbines Are Arranged The propulsion unit will consist of one set of turbines and reduction gears of the 2-cylinder, cross-com- pound type arranged so that either turbine can 'be operated ahead or astern independent of the other tur- bine. The double reduction will be in three independent gear boxes mak- ing practically a single reduction in each box. The helical gears will have 'true involute teeth with 32 teeth in a pinion. Kingsbury type thrust bear- ing will be integral with the reduction gears. - A lubricating oil pressure will be maintained by static head from gravi- ty tank to bearings, thence it will drain by gravity to a sump tank of about 600 gallons capacity, located under the engine" floor. The oil pumps will draw from the sump tank and discharge oil through either or both coolers to the gravity tank, thus maintaining a constant oil circula- tion. An oil filter or purifier will be by-passed in the system for taking a portion of the oil at a time for filtering. The shaft will be made up of seven pieces, 1434 inches diameter: couplings forged on and fitted with eight tapered coupling bolts with nuts on the forward side only. Each sec- tion of the shaft will be supported by two cast iron bearings, the lower half of which will be fitted with bab- bitted surface, . suitably lubricated. The propeller shaft will be 16% inches diameter with coupling forged on for- ward end and aft end tapered and threaded for propeller and nut. A bronze sleeve will be shrunk on the propeller shaft an pinned to the: shaft by %-inch headless: screws riveted bulkhead," with ° THE MARINE REVIEW over. One 6-inch fuel oil filling pipe will be provided on each side of the ship for each tank or settling tank. An equalizer pipe will be fitted athwart- ships between «the side tanks. The double bottom fuel tanks will be filled by gravity through the transfer lines from the side tanks. Two -fuel oil service pumps of the horizontal duplex double acting type will discharge through the fuel oil heaters and strainer to the burners. An overboard connection will be made from the dis- charge line back to the suction to enable the engineer to circulate the oil before starting the fires. Steam heater coils will be fitted around the suction in all. the fuel oil tanks. The two oil heaters will each have a capacity of 5000 pounds of 14 degree beaume fuel oil per hour to be heated from 90 to 250 degrees. One duplex basket type fuel oil suction strainer and one duplex basket fuel oil dis- charge strainer will be provided. The discharge strainer' will have screw connections and the suction strainer flange connections with proper cross- connection valves, so that either strainer may be cleaned while the other is in operation. Each vessel will have 12 oil burn- ers of the mechanical atomizer type, and air registers complete for in- stalling in Scotch boilers. The burn- ers will have a total maximum capac- ity of 5000.pounds of fuel oil per hour. The four boilers will be of the single and Scotch marine type, about 15 feet 10 inches internal diameter by 12 feet over the heads." Each boiler will be constructed for 215 pounds working pressure, 325 pounds test pressure. The total heating sur- face of each boiler will be about 3100 square feet. Four superheaters will be provided, each superheater to han- dle 16,000 pounds of steam per hour at -215 pounds pressure. The. boilers carry forced draft blowers. Steering Gear Is Worm Driven The steam steering gear will 'be of Poe steam tiller type. It will have a rack secured to the deck and double engines mounted on the tiller. The engines will drive through a worm gearing to a pinion which will eugage the rack through a friction clutch. The engines will Operate on. 100 pounds of steam pressure and 5 pounds of back pressure. The control will be hydraulic telemotor with pol- ished brass controlling wheel. and stand in the pilot house, and steering engine room aft. A separate quadrant will be fitted on the rudder stock with rack on the outer edge, for hand gear. 'The hand wheel. will operate April, 192) the quadrant through worm wheel, clutch, and pinion Similar bj the steam gear. The steam gear will be capable of throwing the rudder hard over through 38 degrees at full speed or 13 knots. The hang Bear will perform the same duty with i men at the wheel at two-thirds speed, These vessels will carry 'the ac- cepted equipment in the way of con. densers, pumps, tools, parts, heaters, injectors, evaporator, etc. The elec. trical installation will consist of ty, 10-kilowatt, direct-current, generators for constant speed operation. Each will deliver a pressure of 125 volts at generator terminals at no load and full load. Both generators wil] be able to carry 25 per cent overload for two hours without excessive heating, Lighting fixtures in the living quarters will be fitted with open glass te- flectors. A separate circuit will be installed for the running lights which will be connected from a switch on the main switchboard to a. telltale panel conveniently located in the pilot house. » WOrm February Lake Levels The United States lake survey re- ports the monthly mean stages of the Great. Lakes for the month of February, 1920, as follows: Lakes Feet above mean sea level Jan. . Feb, Pperior. oo x 602.08 601.91 Michigan - Huron 580.08 579.95 eect lait... 3s... 573.10 573.41 ie 571.38 570.80 Ontario: . Ps... 245.31 245.01 Lake Superior is 0.17 foot lower than last month, 0.16 foot lower than a year ago, 0.09 foot above the average stage of February of the ta years. Lakes Michigan-Huron are 0.13 foot lower than last month, 0.71 foot lower : than a year ago, 0.01 foot above the average stage of February of the last 10 years. Lake Erie is 0.58 foot lower that! last month, 1.41 feet lower than 4 year ago, 0.80 foot below the average stage of February of the last 10 years, 2.95 feet below the high stage of February, 1863, and 0.17 foot above the low stage of February, 1902. Lake Ontario is 0.30 foot lowef than last month, 0.90 foot lower thaf a year ago, 0.47 foot below the aver age stage of February of the last 10 years, 2.66 feet below the high stage of February, 1886, and 1.18 feet above the low stage of February, 189%. During the last 10 years the Februaty level has averaged 0.10 foot higher than the January level, and 0.2 foot lower than the March level.