America's 100 largest yachts for 2007. Information for America's one hundred biggest megayachts in 2007. Halcyon Days is one of the largest yachts in America.

By Diane M. Byrne

#56: HALCYON DAYS—170'7"

If you're in the market to build a yacht, borrow a page from Halcyon Days' notebook and put a sauna in the master suite. Mahogany paneling lends a classic air to the decor.

Y: 1994; B: Feadship/Royal De Vries Scheepsbouw, Holland; N: De Voogt Naval Architects; H: steel; E: 2/1,280-hp Caterpillars

America's 100 Largest Yachts 2007