but I've mostly been spending my savings. Fortunately, I've found a lot of cheap marinas, and living on the boat hasn't cost me as much as I thought it would. Occasionally, I'll look at an old ...

Three years ago, Sam Train, a naval officer stationed in Newport, Rhode Island, asked his wife, Francesca Spidalieri, if she'd be willing to live on a boat. "She said 'Sure,'" he recalls.