April 1983 - Maritime Reporter and Engineering News

Stone Manganese Fuel Saving Propellers Discussed At N.Y. Reception

Stone Manganese Marine Limited held a reception and film show recently at the Whitehall Club, N.Y., to an invited audience of shipowners and other marine interests from the metropolitan New York area.

The film and the discussion which followed concentrated on the subject of fuel economy and ships with relation to changing propellers for derated horsepower and rpm. The film presented the story of the design and manufacture of one of the series of five propellers being produced for vessels derated from 40,000 hp at 80 hp to 25,000 hp at 57 rpm with the speed reduced from 15 to 13 knots. The final weight of the 4-blade propeller shown was 69 tons, with a diameter of 11 meters. The fuel-saving on the first ship to complete the change has achieved the expected 10 percent.

The importance of propeller polishing was discussed and the film described the worldwide Stone Manganese network of manufacturing and service subsidiaries including those located in Singapore and Hong Kong, which enable shipowners to obtain expert assistance.

Attending on behalf of the hosts, Stone Manganese Marine Limited, were Les Hawdon, technical director, Jerry Carr, sales manager, and from the U.S.A.

agents—Ampower Corporation— Bob Imlah and Jack Adzema.

For more information on reducing fuel costs with Stone Manganese propellers, Write 20 on Reader Service Card

Other stories from April 1983 issue


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