By Cat DiStasio
The vast majority of boats rely on fossil fuels that tax the environment. Fortunately, alternative energy is on the rise in the marine world, and solar-powered ships are prepared to sail into a much cleaner future. It's been a few years since the world's largest (at the time) solar-powered ship completed its journey around the world, and a number of a fresh concepts are now awaiting construction. Giant multimillion dollar luxury yachts promise stellar sightseeing adventures with silent, solar-powered engines, while a unique vertical marine vessel will someday serve as a long-term base for deep sea research. Meanwhile, an autonomous solar-powered boat is currently making its way across the Atlantic. Read on to learn about all the wild and crazy solar-powered vessels just waiting to hit the waves.