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

38 MARINE REVIEW Fit Diesels in Tanker Tanker E. T. Brprorp recently converted from steam to diesel drive WO 2-cycle Busch-Sulzer diesel ‘ engines capable of driving the ship at a sea speed of 11 knots have been installed in the E. T. BEp- FORD, first of the Standard Oil Co. (N. J.) fleet to be converted in America from steam to diesel drive. The vessel, which sailed recently on her maiden voyage as a motorship, was formerly equipped with triple expansion steam engines capable of developing 3500 indicated horsepower. The new diesel machinery which was installed by the Federal Shipbuilding & Drydock Co. consists of two pro- pelling units, each of which has the following characteristics: Power— 1500 shaft horsepower at 90 revolu- tions per minute. Type 2-cycle, single acting. Number of cylinders—Four. Bore and stroke—30” x 42’’. Total fuel consumption per day—6.9 tons. Total lubricating oil consumption per day—13 gals. The auxiliary diesel units of the E. T. BEDFORD consist of three 150 shaft horsepower engines, one of which will operate a 100-kilowatt gen erator, the other two of which will each operate a 50-kilowatt generator and an auxiliary air compressor. All engine room machinery including steering gear is electrically operated, the only steam pumps installed in the machinery space being provided for emergency use. Previous to her con- version the FE. T. BEDFORD was equipped with two 14 x 20 x 16% x 24 inches steam driven horizontal duplex cargo pumps. These pumps have not been changed but steam is now supplied to them by two Bab- cock & Wilcox boilers each having approximately 1600 square feet of heating surface and designed to sup- ply steam at 100 degrees superheat under a working pressure of 250 pounds per square inch. Donkey boilers are not used aboard -the new motorship except for dis- charging cargo and ballast. Instead a small heating boiler has been pro- vided for heating the fuel oil, quar- ters and machinery space; this is in- stalled in a gas-tight compartment in the lower engine room where it is easily accessible to the engineers and oilers who look after the operation of this equipment. Nor is this space the only one which has been made gas tight; special compartments have also, been provided for fuel oil tanks, lubricating tanks, donkey boiler, etc., where the collection of gases might prove a source of danger, and more than ordinary care has been given to the design of the engine room ven- February, 1927 tilating system throughout. The fuel oil system consists of two day-tanks each having a _ capacity equivalent to 15 hours’ consumption, equipped with heater coils and so shaped that any water and sediment in the fuel will drain to a low point from which it can be readily with- drawn. While the motors are being operated from one tank fuel will be drawn from the bunkers and passed through a centrifuge into the second tank from which it will be fed to the motors while the first tank is being cleaned and filled with fresh oil. In recognition of the important. part which clean lubricating oil bears to the successful operation of diesel engine equipment careful considera- tion was given to the design of the lubricating system on the E. T. BrEp- FORD. As a result, although the pip- ing arrangement is very simple, puri- fication of the entire amount of lub- ricating oil in circulation is effected once every 24 hours. Particular care has been exercised to reduce the hazard of fire. The tanker~ has been equipped through- out with what is known as the Lux fire system furnished by Walter Kidde & Co. No less than 118 ecar- bon dioxide cylinders are installed on the upper deck in banks of ten, eleven and twelve, depending on the spaces to be protected. Control of the sys- tem to extinguish fire in any part of the ship is embodied in a set of pull handles located in the aft passageway on the bridge deck. Each control handle releases a (Continued on Page 48) ONE OF THE TWO 2-CYCLE, ENGINES INSTALLED E. T. BEDFORD—EACH ENGINE DEVELOPS 1500 SHAFT HORSEPOWER AT 90 REVOLUTIONS PER MINUTE 4-CYLINDER, SINGLE-ACTING BUSCH SULZER DIESEL IN THE STANDARD OIL CO. (N. J.) TANKER