The Greenpoint Monitor Museum "Road Show" P.S. 161 M January 13, 2006 At the beginning of the Civil War the US Navy battleships were made of wood. These ships depended on wind power to make them move.

The Greenpoint Monitor Museum "Road Show" P.S. 161 M January 13, 2006

At the beginning of the Civil War the US Navy battleships were made of wood. These ships depended on wind power to make them move.

At the beginning of the Civil War the US Navy battleships were made of wood. These ships depended on wind power to make them move.

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