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VIRGINIA SINCLAIR—Tanker—Ocean—Single Screw—Turbine DESCRIPTION This tanker and sis- ter ship Harry F. Srn- CLAIR, JR. are geared turbine driven. The hull is built on the bracketless system of construction through- out length of tanks with ordinary trans- verse framing at ends. There are two continu- ous longitudinal bulk- heads in place of the usual centerline bulk- head and wing summer tanks. Name—VIRGINIA SINCLAIR Owner—Sinclair Navigation Co. Builder—Bethlehem S.B. Corp., Fore River Naval Architect—Owner & Beth. S.B. Corp. Launched—Oct. 9, ’30; completed, Dec. 20, ’30 Sister Ship—Harry F. Srycuiam, Jr. respectively launched and completed, Nov. 24, ’30; Feb. 29; 1951 Classification—American Bureau & Lloyds HULL PARTICULARS Length over all, 435 feet %4 inch; length between perpendiculars, 416 feet; breadth mold- ed, 57 feet; depth molded, 32 feet; draft, sum- mer load line, 25 feet 6% inches; displacement loaded, 13,340 tons; gross tonnage, 6151; net tonnage, 3796; total deadweight, 9345 tons; cargo capacity, liquid, cubic feet, 381,100; bunk- er fuel capacity of oil in tons, 1060; speed, 13 knots. — MACHINERY PARTICULARS Main Engine—One, two-cylinder double re- duction geared turbine, built by De Laval Steam Turbine Co. Size, 4000 horsepower at 75 revo- lutions per minute. Boilers—Three, Babcock & Wilcox watertube marine boilers, total heating surface, 10,116 square feet, total superheating surface, 1113 square feet and total air heating surface, 5199 square feet; working pressure, 400 pounds; su- perheat 200 degrees Fahr.; fuel, oil. Super- heaters, oil burning equipment, air heaters and other boiler room accessories, supplied by Bab- cock & Wilcox Co. AUXILIARY EQUIPMENT Pumps—wWarren (major share) ; Worthington; Northern Main & Aux. Air Ejectors—Foster-Wheeler Windlass—Winches—Hyde Windlass Co. Steering Engine—Hyde Windlass Co. Propellers—Cramps Brass & Iron Fdry. Refrigeration—Brunswick-Kroeschell Co. Electric Generators — De Laval — Crocker Wheeler Pump Motors—Fans—wWestinghouse Auxiliary Lighting (electrical end )—Diehl Blower & Fan Motors—Diehl Gyro Compass & Pilot—Sperry Gyroscope Anchors—Baldt Anchor, Chain & Forge Corp. Anchor Chain—National Malleable Clock Equipment—Chelsea Clock Co. Evap. & Distiller—Davis Engineering Corp. Oil Purifiers—De Laval Separator Co. Soot Blowers—Diamond Power Specialty Radio Equipment—Radiomarine Corp. Deck Covering—Selby, Battersby & Co. Submarine Signal—Submarine Signal Co. Air Compressor—Westinghouse Air Brake Co. Floor Plates—Alan Wood Steel Co. The VIRGINIA SINCLAIR and sister ship Harry F. SINCLAIR JR. are built on the Isherwood brac- ketless system except at ends which is trans- verse framing. The Butterworth tank cleaning system has been installed. With such high steam pressure (400 pounds) and with superheat and careful steam condi- tions in every respect, these tankers are ex- pected to give an unusually high economy in operation. Great care was also exercised in determining the most efficient form of hull and the lines are based on previous model tests of ships of the same type. During official trial over a measured mile the new tanker logged 13.305 knots at 73.8 revolutions per minute cor- responding to 3968 shaft horsepower and 24 feet 1 inch draft. A full power, 6-hour economy . run, gave a result of .668 pound of oil per shaft horsepower per hour for all purposes. “WN 4 = 4 Sess: 3. ss 7 Joi iN , | Armee | ‘ : it MANS ‘eon | H hen i: teat y ‘ if aa Won eilenccpeet . ret 4 / ’ ; K 18 A H KE 14 MARINE REview—April, 1931