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Frigate "NITEROI" and sister ships (Drawing by J. Sachse, Hamburg) Owners: Brazilian Ministry of Marine; Builders: VosperThornycroft Ltd., Portsmouth; Propellers: Two EscherWyss Controllable Pitch Propellers. PROPELLERS OF THE FUTURE VP 25 Frigate "NITEROI" During the last decade gas turbines have been generally adopted for the main propulsion of modern frigate and destroyer type vessels, thus creating a demand for highly loaded controllable pitch propellers. These applications require the highest standards in design and manufacture. Escher Wyss has developed a unique design suitable for the exacting requirements of these modern warships. This type is already being manufactured in the 30000 HP range and is also available for the 50000 HP range and upwards. The modern workshops of EscherWyss have a world-wide reputation for building hydraulic and thermodynamic machinery. More than 1000 controllable pitch propellers have so far been delivered. A long history of CP propeller development, combined with modern engineering methods ensure top reliability at lowest maintenance cost. Within the last 4 years, EscherWyss has received orders for more than 50 CP propellers from shipowners in Germany, Sweden, the Netherlands, the United States of America and Brazil for propulsion powers exceeding 15000 HP. A 46000 HP propeller is presently under manufacture by our Japanese licensee Kawasaki Heavy Industries Ltd. Our delivery programme also includes bow thrusters. Units of up to 1800 HP are now in operation. If you have any questions or inquiries please write to us for further information. 1 ((eschefAX ) ESCHER WYSS G.M.B.H. D-7980 Ravensburg/W. Germany Our Representative in U.S.A.: Sulzer Bros. Inc. 1 9 Rector Street, New York, N. Y. 1 0006 Tel.: (212) 425-4560, Telex: sulz ur 620219 IsuLZERi Group Member \llwYSS JW September 15, 1973 11
