We don’t need a guidebook to tell us that some parts of the Los Angeles area are teeming with toys. One such object sits in the Marina del Rey boat harbor, and is now a major feature on the local skyline, even though it floats. It’s the Asahi, a sailboat 184 feet in length, with masts the size of giant redwoods. And it can be yours for a chartered excursion. All you need is a cool $290,000 per week.