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July, 1914 sults of which will be followed with interest. For operating the Stone- Lloyd doors, three pumps of strong constructton. are situated in the center turbine room. There are four bilge pumps, one in each wing engine room, one in the main condenser room, and one in the pump recess fitted in the cross bunker between Nos. 1 and 2 boiler rooms. For supplying hot'. salt water to baths a pump is provided in the port condenser room. Two pumps for sup- plying drinking and cooking water, and washing water respectively are fitted in the port wing engine room, these pumps being connected with THE MARINE REVIEW alleyways thermo tanks are fitted. Electrically-driven fans draw in cold air which is warmed by contact with steam-heated tubes, and then 'dis: charged through trunking to different parts of the ship. By reversing the action of the fan, vitiated air may be exhausted in warm weather. In addi- tion, and when steam heating is in use, 50 fans will supply cold air or exhaust foul air into the open. In all, the plant is capable of hand- ling 12,000,000 cu. ft. per hour. The system is arranged on the flow and return low pressure principle of sufficient capacity to enable a tem- perature of 70 deg. Fahr. to be main- ONE OF THE AQUITANIA'S POWER LIFEBOATS EQUIPPED WITH WIRELESS the water storage tanks in the ship's double bottom, and arranged to dis- charge to service tanks on deck, whence the supply to the various draw-off taps is led by gravitation. The cargo machinery consists of Six cargo and warping winclfes of the silent type. For dealing with passen- gers' baggage two 30-cwt. electric cranes are fitted having a 21 ft. 6 in. tadius, lifting from a depth of over 80 ft. at a speed of 120 ft. a minute to. 300 ft. per minute. Each compartment of the vessel and the accommodation throughout has - ceived separate consideration. For Supplying warm air to cabins and tained in all rooms and corridors, in all conditions of weather experi- enced in North Atlantic, even when obtaining 18 deg. of frost or 14 deg. Vahr, Safety and economy are insured by the adoption of a steam pressure of 5 Ib. or under. It may be men- tioned that all radiators are fitted with patent thermostatic valves by means of which the temperature may be reg- ulated to within 1 deg. Fahr. Constant circulation is effected by means of a special pump, capable of maintaining 15 inches of vacuum, which is connected up to the return pipes. 255 ' The hot salt or "Roman" type of bath is perhaps the most popular: of all on board -ship. This. is: evidenced by the very large demand made upoh the system, and in the Aquitania the installation especially reserved for this purpose is worthy of note. Water is first pumped to a storage head tank on the boat deck. Situated in the 'condenser room is a special storage pattern calorifier, taking cold. salt water at the inlet from the head tank; steam heating tubes within' the cas- ing raise the temperature of the: wa- ter to 160 deg. Fahr., when an auto- matic device comes into action and cuts off the steam supply. A _ special pimp is used for inducing primary circulation throughout the system. Supply pipes are led to various points throughout the ship for sani- tary service, washing decks, baths and fire service. Two powerful duplex pumps and one motor-driven pump situated in the main engine rooms are connected to ship's side valves and lift sea water up into tanks of large capacity on the boat deck, thus by gravitation insuring a steady flow and plentiful supply in the supply mains. The total capacity of the plant is 520 tons..per hour. - A. large size main completely encircles the main deck, from which rising mains and down- comers supply the remaining decks. . Fire Service The fire service is particularly am- ple. It has been arranged that the above-mentioned pumps may discharge direct to the fire main should occasion arise, without passing through the head tank. In addition, the ballast pumps are connected up suitably for doing fire duty in emergency, while there are five hand pumps, three of which are fixed on the shelter deck and two are of the portable type. An important feature of the Aqui- tania is the salt water plunge bath equipment; the pumping arrange- ments permit of frequent or continu- ous changing of the water and the maintaining of better conditions than those which obtain in plunge baths ashore. The hot washing water or "hot con- densed" service performs a most ex- tensive duty, branches from circulat- ing mains being led to no less than 880 draw-off taps. These are situated in all lavatories throughout the ves- sel, and connect with basins in first- class private bath rooms and _state- rooms, dispensary, operating room, barbers' shops, service lockers and sinks in kitchens, pantries and scul- leries. Two storage pattern steam-heated calorifiers, each of a storage capacity of 200 gallons, are fitted, and the