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256 working output is rated at 2,500 gal- lons per hour. Water is pumped from one of the double-bottom tanks to a head tank on deck and thence by a downcomer is led into the calorifier, where its temperature is raised to 160 deg. Fahr. and automatically regulated. Primary circulating is induced by means of separate pumps and the mains are so arrange that no tap is further dis- tant than 4 ft. from its supply main. Or cold washing water is led to wash basins of first, second and third class, officers', engineers', crew's and hospital lavatories, to basins in first class private bath rooms, to basins in first and second class staterooms, dis- pensary, operating room and barbers' shop, to service lockers, sinks in gal- leys, pantries, sculleries and photo- graphic dark room. The condensed water pump draws water from certain of the double-bottom tanks, discharging to three separate head tanks on deck whence gravitation supply is led to the various draw-off taps. The pump has a rated capacity of 50 tons per hour. = | et Drinking Water Special provision is being made in this service to insure an ample supply of pure fresh water. In addition to the ordinary filtering devices for the arresting of suspended matter and re- moving of any discoloration, the water will be passed through special germ- proof media. Sterilizing arrangements are pro- vided. for the periodical overhaul of the filtering media. This applies equally to all portable water used. The water for drinking. and cooking purposes is stored in special double- bottom tanks having a separate pump . and head tanks to enable sudden and large demands to be adequately met. The drinking water is passed through a cooler, which is part of the refriger- ator installation, prior to reaching the various taps. It is difficult to realize the impor- tant and extensive application of elec- tricity on board such a vessel as the Aquitania. In order that it may be _understood, it will be as well to fur- nish at some length particulars of the various uses to which current is put. There are nearly 10,000 lights in the ship and 200 electric motors. The generating plant consists of four 400-kilowatt turbo-generator sets by the British Westinghouse Co., and the design embodies many special fea- tures. Among others may be men- tioned the system of securing the tur- bine blades, these being of the im- pulse type, of steel and cut from the solid, while the dynamo commutator THE MARINE REVIEW is of the radial type. The plant has an output the equivalent of that neces- sary for lighting a town of 110,000 in- habitants. The electric energy is dis- tributed on the three-wire system, hav- ing 220 volts between the outers, and 110 volts between each out and the middle wire. All the large motors are wound for 220 volts and are connect- ed across the outers, while the small- er kitchen motors and all the light- ing motors are arranged for 110 volts. and are connected between the outers and the middle wire. : The 14 large motors which drive the 28 forced-draft fans for the boilers, and the motor-driven sanitary pump are mentioned elsewhere. In addition to these the engine room equipment proper includes motors for the engine turning gears and lifting gears, mo- tors for operating the large sluice valves, and motors for driving the engine room and fan room ventilating fans, as also all machinery in the en- gineers' workshop. | Electro-mechan- ical revolution indicators are fitted at the starting platform. There are nine decks in the Aqui- tania, in addition to the hold, but one (the lower orlop) is only partial, being ahead and abaft the machinery. Of these decks six are in the molded structure of the ship.. Above these there are three superstructure decks, the first extending for about 640 ft., the second for 624 ft., and the third, or boat deck, for about 464 ft. in length amidships, further aft, a deck- house for the second-class quarters is utilized for the carrying of additional boats on the same level as the boat- deck proper. The total height from the keel to the boat-deck level is 94 ft. On the boat-deck accommodation is to be found at the forward end for the officers' quarters and mess-room, and at the after end for men _ servants' mess room, as well as for the Mar- coni wireless telegraph office. The deck-house covers the skylights or the domes from the important public rooms on the deck below. The ceil- ings of these public rooms are at a much greater height than is usually the case, a_ special arrangement of structural work being introduced to give vertical strength, while the coam- ings are particularly heavy to make up for the larger openings in the decks. On the next deck, designated the "A" deck, the principal apartments ar- ranged for are the first-class drawing- room, lounge, salons, smoking room amidships, and a second-class lounge further aft. The first-class lounge and smoking room are connected by the long gallery. On either side of July, 1914 the first-class lounge is the garden lounge. On the "B" deck there are arranged many special staterooms with one and two beds in each. The promenade ex- tends all around the deck-house, but is screened on each side at the for- ward end for a considerable length by extending the bulwarks up to the "A" deck, and fitting large sliding windows. In this way is formed a sheltered promenade. On the after end of the "B" deck there is the second-class smoking room and draw- ing room, and the verandah cafe, out- side of which there is extensive prom- enading space, and above which is a boat deck. The "C" deck, which forms the top of the molded structure of the ship, and is 66 ft. from the keel, is almost entirely given over to sleeping quar- ters. At the forward end of. this deck there is space for windlasses, capstans, cargo hatches and _ cargo winches, and a house enclosing the entrance to the third-class quarters on the decks below. The forward part of the deck affords a promenade for the third-class passengers in fine weather. At the after end of the ship, also, there is space for work- ing the ship with the necessary winches, capstans and gear. The Cuisine Department The first deck within the molded structure, designated the "D" deck, is given over largely to the cuisine de- partment. In order to add to the comfort and simplify ventilation, the height between this and the deck above is 11 ft. The first-class dining salon is almost amidships and of great length and the full width of the ship. A foyer, or reception room for the first-class passengers forward of the first-class dining salon occupies a con- siderable space. The second-class din- ing salon is further aft, and is also of great dimensions. Between the two is the kitchen and all that apper- tains to the culinary arts. - The sec ond cabin gymnasium is also on this deck. At the extreme after end of this deck there is a third-class smok- ing room and entrance to the third- class quarters, while at' the forward end there is a large third-class social hall. The "E" deck is regarded as the "working deck of the ship", and thus there is upon it accommodation for stores and other departments. The first-class swimming bath and gym- nasium are situated on this deck. There are, at the after end of this deck, state rooms for second-class passenger accommodation. Large spaces are allotted for third-class