A limited showing of 30 of the 112 residences aboard the Four Seasons Ocean Residences ship took place in London yesterday. The private 719-foot vessel circumnavigates the globe and spends more than 250 nights a year in unique ports from Antartica to the Amazon. Each year’s itinerary will include major world events like the Rio Carnival, The America’s Cup, The British Open Championship, the Grand Prix in Monaco and the 2010 London Olympics, and ship residents will enjoy unhurried on-shore excursions coordinated by their onboard concierge. Residences and penthouses will feature private entry halls, floor-to-ceiling windows, and spacious living room areas with sea views. Homes will also boast expansive terraces, a full-size gourmet kitchen and private entrance for staff. Prices will begin at $3.8m and range up to $39m for one of the penthouse plans.