Yep, the song will be stuck in your head for the rest of the day. But even former Beatles would appreciate the quality of the Y.Co Yellow Submarine. Built by the mini-submarine masters at GSE Trieste, the VAS 525/60 (its technical name) is over 27 feet long, can drop down to 160 meters, and can hold up to five passengers, or at least half of the people hanging out on your yacht. The fact that it looks just like the title object from an iconic song? A total coincidence, we're sure.