5 of 7
Length: 156 ft.
Designed by: German Frers; Pieter Beeldsnijder interiors

Built by Royal Huisman for Netscape co-founder Jim Clark for an estimated $50 million, the Hyperion was unprecedented in many ways when it launched in 1998. It made history as the largest sloop and -- at 194 feet -- the tallest mast ever constructed. And Clark had a team of software developers custom design the touch-screen systems used to operate the ship's controls from multiple locations aboard the yacht. He has since sold the ship and commissioned two more projects from Royal Huisman: Athena, a 295-foot sailing yacht that launched in 2004, and a 138-foot replica of a 1930s sailing yacht that was christened Hanuman last year.

NEXT: Arcadia
Last updated June 26 2009: 11:32 AM ET
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