Production. Submarines. Installation of an engine part in a submarine under construction at Manitowoc, Wisconsin

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Production. Submarines. Installation of an engine part in a submarine under construction at Manitowoc, Wisconsin

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Production. Submarines. On the shores of America's inland waterways, many underwater crafts are being constructed. This submarine is undergoing finishing touches in a small bay at Manitowoc, Wisconsin

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Production. Submarines. Construction of the hull section of a submarine at Manitowoc, Wisconsin. These sections will be assembled in a small bay, and when completely installed will be sent through the Saint Lawrence Canal to the sea

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Production. Submarines. As the shift changes, workers pour out of the shipyards at Manitowoc, Wisconsin, where submarines are built on a twenty-four-hour day, seven-day week basis

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Production. Submarines. As the shift changes, workers pour out of the shipyards at Manitowoc, Wisconsin, where submarines are built on a twenty-four-hour day, seven-day week basis

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Production. Submarines. Men of America's army of production. The nation's underwater craft are being launched in record time because of men like these two who work on a construction crew at the Navy's shipyard in Manitowoc, Wisconsin

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Manitowoc Ship Building Corp., Manitowoc, Wisc. Aug. 1942. Production of submarines

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The Boys' Book of Submarines