Sure, but this seems way more space-friendly. I don't know about the available space in Japan, but I'd have nowhere to fit a boat that only holds ten people, and I live so close to the water I can see it from my window.
Edit: I've also seen five drunk people capsize a dingy boat just trying to board it. So I'd hate to take my chances with anything that could capsize in a tsunami, where fast moving debris could crush or trap you the second you hit the water.
Edit: I've also seen five drunk people capsize a dingy boat just trying to board it. So I'd hate to take my chances with anything that could capsize in a tsunami, where fast moving debris could crush or trap you the second you hit the water.