The Four Seasons is taking to the high seas. The luxury hotelier has partnered with BV International Oceans Holdings on Four Seasons Ocean Residences, a 48,600-ton residential vessel, which will contain 112 wholly owned residences of one-, two-, three- or four-bedroom units. The ship is scheduled for delivery in 2010. Prices begin at $3.8 million; service and amenities offered at Four Seasons hotels on land are included. The ship also will have 70,000 square feet of public space, four restaurants and a variety of onboard activities and entertainment. Once in service, the ship will operate regular itineraries with visits to such places as Antarctica and the Amazon.