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et tao with pilasters in a darker shade. Dark brown mahogany § sideboards give a note of richness to the room set off by an ivory ceiling and the floor of ruboleum in dignified design. Diesel Propelling Machinery Two separate -engine rooms are provided, in one of which is located the main diesel propelling machinery and its auxiliaries and in the other the diesel generating sets and other auxiliaries. Two diesel engines of Harland, Burmeister & Wain make or 10-cylinder, double acting, four-stroke cycle type, developing 10,000 brake horsepower each at 110 revolutions— per minute, are directly connected to two propellers. Cylinders are cooled by fresh water and the pistons are oil cooled. The cylinders are 840 millimeters (33.1 inches) in diameter by 1500 millimeters (59.4 inches) stroke. Injection air for the main engines is provided by independently driven air compressors and for this purpose there are four air compres- sors each driven by a Harland, Bur- meister & Wain make, four-cylinder, trunk piston, diesel engine. These air compressors are located in the auxiliary engine room and also sup- ply air for maneuvering purposes, to four separate tanks. In the forward engine room are four 500-kilowatt . generators driven by diesel engines of the same make and of the six- cylinder trunk piston type. In case of breakdown one small, steam driven emergency compressor supplies the starting air. In accordance ‘with modern practice use is made of the heat of the diese! engine exhaust: The exhaust from the two main engines generates steam at sea in four Clarkson thimble tube type boilers. The heating circum- ference of each boiler is 500 square feet and the boiler is 5 feet 3 inches in diameter and about 11 feet in height over all. Each boiler can produce at least 2500 pounds of steam per hour at a working pressure of 100 pounds per square inch. At maximum capacity the boilers are capable of recovering about all of the available heat in the exhaust gases. The boilers are not fitted with oil burners, but do have feed water regulators, and require no_ special supervision when the ship is under way. Still another Clarkson boiler takes the heat from the exhaust gases of the two diesel engine generators. This boiler has a heating surface of 250 square feet and can _ generate 1900 pounds of steam per hour with a working pressure of 100 pounds per square inch. Besides the five waste heat boilers mentioned above there are two single ended, oil fired scotch boilers for additional steam, particularly for use in port. No pains have been spared to make the Brrrannic a safe and strong ves- sel. She was built under survey of Cabin Lounge on M. 8S. Britannic Lioyd’s and of the board of trade and meets every requirement of these two bodies for her class. Equipment includes the Gyro compass, submarine signalling apparatus, direction finding gear and motor lifeboats equipped with wireless. There are twenty sets of Welin quadrant type of davits with electric boat control for each set. The steering gear is of the electric hydraulic type, with pumps and motors in duplicate and under full control from the captain’s bridge. Cargo carrying arrangements are most complete. Four large cargo holds are served by eight large hatch- ways provided with 16 electric winches and derricks capable of tak- ing loads up to 10 tons. . Twelve of the winches are of three-ton capacity and four of five-ton capacity. They are of the latest worm geared type with contactor controls, built in Eng- land, as of course, was practically everything that went into the vessel. The windlass and capstan gear also operated electrically, is of the verti- cal type. There are two _ wildcats for working 330 fathoms of 3 7/16- inch studlink chain cables, and two Cabin Dining Saloon on M. 8. Britannic MARINE REVIEW—August, 1930 23