34 NEW 20,000-TON TANKERS. 
I1 inches in diameter by 10 feet 1014 inches long. The main boilers are fitted for 
burning oil only, and the donkey boiler for coal only. 
The fuel system consists of two horizontal duplex pumps 6 inches by 4 inches 
by 6 inches and two similar transfer pumps 14 inches by 9 inches by 12 inches. 
Three heaters are arranged so that oil may be discharged through them in multiple. 
The service pumps and their fittings are located in a gas-tight steel enclosure on 
the port side of the boiler-room. ‘The transfer pumps are located, one in the fire- 
room and one in a special steel pump-room enclosure in the after end of the fore 
hold. The after pump has a 6-inch connection to the after fuel-oil tank and 
a 6-inch discharge connection to the 6-inch fore and aft transfer line to the forward 
fuel-oil tank and transfer pump, and also a 6-inch discharge connection on the 
shelter deck. The forward pump has a 6-inch suction to the forward fuel-oil tank 
and a 6-inch discharge to the transfer line and to the shelter deck. 
There are two main feed pumps, 14 inches by 9 inches by 24 inches, with brass 
water ends and automatic control gear, each to draw from the main feed tanks and 
reserve feed tanks and discharge through the feed heater or by-pass to the main 
and auxiliary checks on main and donkey boilers. An auxiliary feed pump of the 
same size is fitted. There are also two injectors connected to the feed lines. There 
is an independent bilge pump, an engine-room ballast pump, a forward ballast 
pump, an independent sanitary pump, a donkey-boiler feed pump, a fresh-water 
pump and an evaporator feed pump. 
Besides the above auxiliaries there are two evaporators capable of producing 
35 tons of fresh water each 24 hours, and a distiller for 2,000 gallons a day. The 
main electric plant consists of two 20-kw generating sets in the engine-room, 
and there is also an emergency generating set of 1214-kw capacity driven by a 
gasoline-kerosene engine located on the upper deck forward. This set is also con- 
nected to the radio set, so as to provide for the lighting of the ship and sending of 
wireless messages even though the main engine-room may be flooded or on fire. 
The refrigerating plant consists of a 2-ton ammonia machine fitted in a gas-tight 
compartment in the engine-room. 
There is an engineers’ workshop adjacent to the engine-room equipped with a 
14-inch screw cutting engine lathe about 6 feet between centers, a 20-inch drill - 
press, and a 12-inch double emery grinder, all driven from a countershaft connected 
with a 5-horse-power motor. 
The cargo oil pump-room is located amidships and fitted with four horizontal 
duplex main pumps with compound steam cylinders 12-inch and 18-inch diameters 
and 24-inch stroke, and oil cylinders 1414-inch diameter. These pumps are arranged 
to work with the ship’s steam at 180 pounds or shore steam at 70 pounds, having 
a by-pass connection admitting live steam to the low-pressure cylinder when 
working with low pressure steam. There are also two auxiliary vertical duplex 
pumps, 12 inches by 8 inches by 12 inches. The main cargo oil-suction system 
consists of two lines of 14-inch pipes, one on each side of the center-line bulkhead, 
for draining the after tanks, and two similar lines leading forward for the forward 
tanks. Each main tank is connected to both main lines of piping by 10-inch 
