Bird-Johnson Awarded MCM Propeller Contract

Bird-Johnson Company, Walpole, Mass., was recently awarded a contract to supply Peterson Builders of Sturgeon Bay, Wis., with three shipsets of controllable pitch (CP) propeller systems for the U.S.

Navy MCM-12, -13 and -14 Avenger- Class Mine Countermeasure Ships. Bird-Johnson also supplied the propellers for the previous 11 MCM 1-Class ships.

The propeller blades will be cast at Bird-Johnson's Pascagoula, Miss., foundry. They will be finished by numerically controlled (NC) machining in accordance with the U.S. Navy's military specification requirements, at Bird-Johnson's Blade Machine Center in Walpole.

Complete propeller system assembly, qualification for shock and vibration, and testing for compliance with electromagnetic and nonmagnetic standards will also be completed at the Massachusetts facility prior to delivery to Peterson.

MCMs are intended to locate and destroy mines that cannot be neutralized by conventional minesweeping methods. They are fiberglass sheathed wood-hulled vessels, 224 feet in length, with twin-screw propeller systems delivering a total of 2,400 hp.

Bird-Johnson Company, a leading U.S. manufacturer of marine propeller systems, is a Navy Milspec qualified builder of CP propeller systems and also supplies commercial CP systems and both Navy certified and commercial fixedpitch propellers. The company is a wholly owned subsidiary of Axel Johnson Inc. of New York City.

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Maritime Reporter Magazine, page 23, Aug 1990

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First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.