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November, 1926 MARINE REVIE W 37 ‘WORT See shown complete dependability dur- ing exacting test runs under government supervision, the two 2900 hp. Diesels built by Worthington for the Shipping Board will soon be installed as main engines in the Shipping Board M.S. Unicoi and Tampa. No vessels afloat will have more modern or economical power plants. The Worthington double-acting two-cycle Diesel is all-American in design and construction—and_ performance under test indicated that it is a more advanced engine than any built abroad. During the official 30-day continuous endur- ance trial the engine was run at full load of 2900 hp. and speed of 96 r.p.m.; then with- out relief of load or stopping, a six-hour over- load run was ordered. Developing 3500 hp., it ran with the same sweet smoothness that characterized the entire test. Then, after 115 BROADWAY, NEW YORK CITY 7231-4 : Two big Worthington soon to go to sea---watch their performance WORTHINGTON PUMP anD MACHINERY CORPORATION INGTON Diesels standing idle for 1614 hours, the big fellow was restarted from dead cold, without priming or any other adjustments, on the first throw of the starting lever. In maneuvering tests, fifty reversals were made in one hour, the average time from full speed in one direction to the first ignition in reverse direction being 8.55 seconds. The test run was made on fuel oil of following average characteristics: Gravity Baumé at 60°F .. . 20.19 : (Some samples tested as low as 14° Baumé) Flash point deg. F. 177 Burning point deg. F. 270 Viscosity Saybolt-Furol at 77°F. = 64 sec. ¢ : ie aaa 5 i oor ne American marine history is rich in achie-e- ments—here is one in the making. If you wish to watch it closely we will send more data on request. BRANCH OFFICES IN 24 CITIES