The crew at Anita Dee Yacht Charters has been lassoing its lines around the docks of Navy Pier for more than 30 years. They regularly untie them to release their yachts for special occasions such as weddings, sightseeing cruises, and parties. Bigger events are staged on the Anita Dee II, a large and luxurious vessel that has a dance floor, two bars, and an on-deck helicopter for flying up to the high-dive platform in the middle of Lake Michigan. The 90-foot Anita Dee I boasts an enclosed deck with a bar and an observation deck with unobstructed views of the city.