Book excerpt: For more than four hundred years, New England shipyards have contributed significantly to America's maritime and naval supremacy. This compelling story is presented through the histories of seventy ships built from the colonial era down to modern times. Well-known vessels like the Constitution, the Nautilus, the Flying Cloud and the infamous whaleship Essex are included, but so, too, are lesser-known ships, including the ill-fated Wyoming and the far-ranging voyager Union. Every type of vessel is covered--their building or voyages making nautical news, often in exciting fashion, and their exploits filled with adventure, danger, tragedy and survival. Historian and author Glenn A. Knoblock explores the construction, life and demise of these ships and details their contribution to our nation's maritime heritage.