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48 Name—Mary ELLEN O’NEIL Owner—California Petroleum S. S. Corp. Builder—Sun Shipbuilding & D. D. Co. Naval Architect—John W. Hudson Launched—Jan. 24, ’28; completed, Feb. 25, ’28 Classification—American Bureau of Shipping HULL PARTICULARS Length over all, 530 feet; length between per- pendiculars, 510 feet; breadth molded, 70 feet; depth molded, 40 feet; draft, 29 feet 6 inches; displacement loaded, 24,077 tons; gross tonnage, 11,628; net tonnage, 7221; deadweight, 17,120 tons; bunker fuel capacity in tons, 1500; speed, 12 knots. MACHINERY PARTICULARS Main Engines—Two, Sun-Doxford opposed piston type oil engines built by the Sun Ship- building and Drydock Co. These engines are of the two-cycle two stroke type and are 21.259 inches x 42.5 inches x 2 stroke. Boiler—One marine watertube boiler of Foster type fitted with Todd oil burners. Total heat- ing surface is 4000 square feet. Auxiliary Engines—Two, 3-cylinder 12% x 18% inches built by Worthington Pump & Machinery Corp. each connected to one, 120 k.w. Westinghouse generator. Ocean—Twin Screw— Die sel DESCRIPTION This fine new twin serew diesel bulk oil earrier of 17,120 tons deadweight construct- ed on the Isherwood bracketless system is the largest tanker ever built on the Delaware and one of the largest built in America. The motive power consists of two Sun-Doxford opposed piston type oil engines. AUXILIARY EQUIPMENT Manufacturers of: Pumps—Worthington Pump & Mach. Corp. Windlass—American Engineering Co. Winches—Hyde Windlass Co. Steering Gear—Sun Ship & Am. Eng. Co. driven by Westinghouse motor Propellers—Sun Shipbuilding & D. C. Co. Refrigeration—Brunswick-Kroeschell Electric Generator—One, 20 k.w. Sturtevant and Westinghouse. Electrical Equipment—For engine room aux- iliaries including two 65 h.p. motors driving main air compressors, furnished by West- inghouse Electric & Mfg. Co. Blowers—B. F. Sturtevant Co. Valves—The Wm. Powell Co. Galley Equip.—Elisha Webb & Son Co. Lubricators Main Engine—Manzel Bros. Co. The Mary ELLEN O’NEIL is a modern tanker in every respect, built of steel to the highest class in the American Bureau of Shipping and to this society’s special survey. She represents the very latest in twin screw diesel engine tank- er design. She has a straight stem and a cruiser stern. Machinery is located aft and the bridge with quarters for deck officers is located amidships. MARINE REVIEW—April, 1928