Also, look at:	Mega yachts Also known as a super-yacht, a mega yacht may be either a sailing or motor yacht, large in size -over 160 ft.  A vessel of this size usually has four decks above the water line and one or two below. It is likely to have a helicopter landing platform			related sites
Sidenote Some Mega Yachts are used exclusively by their private owners, others are operated all year round as charter businesses, and a large number are privately owned but available for charter part time. Weekly charter fees range from a few tens of thousands of dollars a week to nearly a million dollars a week. This covers the wages of the crew, but not fuel, food and drink, or other incidental expenses.