The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

544 rudder stops are cast on the post, but built-up chocks are provided for these at the tiller. The stern frame extends for three frame spaces forward of the propeller post at the keel tapering to a thickness of 2 inches at the forward end. The rudder is a single plate ‘with forged post, having forged arms opposite each pintle shrunk on and keyed to the main piece. The rudder stock is forged steel, the upper and lower stocks connected by _ vertical coupling with key and fitted bolts. The = 3 = on = 4! I. THE MARINE REVIEW continuous expansion tank is fitted be- tween the second and upper decks, over all the main oil tanks. The trunk bulkheads extend through the after oil bunkers. Bilge keels extend about 160 feet amidships, port and starboard. The two fresh water tanks, of a total capacity of about 7700 gal- lons, are located on the upper deck aft of the engine hatch. Stockless anchors are fitted. A vertical ladder is provided to each main oil tank, the summer tanks, and { a1 O A Ihe Beal AU 2 eam fh /b MIDSHIP SECTION OF TANKER rudder is arranged to ship and unship afloat, without disturbing the upper stock. Has Large Double Bottom ~The vertical keel is continuous throughout from peak to peak bulk- heads. An oil tight center line bulk- head extends from the top of the vertical keel.to the top of the tanks throughout the length of the cargo and fuel oil tanks. The double bot- toms extend from after peak to for- ward boiler room bulkhead, and straight out to the sides of the ship without margin plate. There are two manholes to each compartment. A the fuel and peak tanks. Docking plugs are fitted in the bottom shell plating to each tank compartment. Hinged watertight metal doors, 24 x 60 feet, are fitted to the pump room entrance, to after bridge bulkhead, to refrigerating machinery compart- ment and to the rooms in the fore- castle. Nonwatertight metal doors of the same size are fitted in the engine and ‘boiler casing and screen bulk- head. Metal skylights and metal hatch covers are used. A cold storage room is built on the upper deck, aft of the engine hatch. It is divided into two com- , ton. | per minute and has an indicated horse- | hand screw, four blades. | cast October, 1920 © partments, the meat room with a ca- pacity of about 550 cubic feet, and the provision room with capacity of about 340 cubic feet. . Engines Are Reciprocating Type The engine iis of the vertical invert- ed, triple expansion type, surface con- densing, with three cranks at angles. of 120 degrees. The cylinders are of the following sizes: Twenty-seven inches, high pressure, 45 inches, inter- mediate pressure, and 75 inches, low pressure, with 51-inch stroke of pis- The engine makes 75 revolutions power of 2700. The main condenser has a total cooling surface of 4000 square feet. The circulating pump is of the centrifugal double suction type | of 5500 gallons per minute capacity. The propeller shaft is 15%-inch diameter with a coupling forged on the forward end, ' tapered, 1 inch per foot for the pro- -peller and threaded for a nut. and the aft end The propeller is of the built-up type, right The blades are manganese bronze, fitted on a iron hub. The fuel oil transfer and the forward | ballast pumps are of the horizontal duplex double acting type. Two fuel oil service pumps of the same type are provided. The nine burners are of. the mechanical atomizer type and have a total maximum capacity of 3700 pounds of fuel oil per hour. The three Scotch boilers have an internal diameter of 15 feet 3 inches each with a measurement of 11 feet 6 inches over the theads. The boilers are con- structed for 200 pounds working pres- sure, 300 pounds test pressure, with — a total heating surface of 2750 square feet to each boiler. A vertical don- key boiler is fitted in the fireroom with 2-inch steam connections led through a nonreturn valve to the auxiliary steam line. The smokebox is fitted for heated forced draft. The fan of the forced draft blower: has a ca- pacity of 22,000 cubic feet of air per minute at 100 degrees Fahr. The two. feed pumps are of the vertical sim- plex, double-acting type, 12 x 8 x 24. A steam smothering system is fitted to all cargo oil tanks, the fuel oil tanks, lamp locker and paint room. The evaporator is of the submerged tube type with a capacity of 30 tons of water evaporated per 24 hours, with steam supply at 100 pounds gage pressure to coils and atmospheric pres- sure in the shell. The fresh water distiller has a capacity of 2000 gal- lons per 24 hours, with circulating water to 80 degrees. For handling cargo oil, two horizontal duplex pumps, 16 x 13 x 24, are located one in each pump room. These pumps are