I wasn't suggesting you worry about it, Rap. Worrying is a waste of mental energy.

But it's an interesting subject, eh?

The Chinese did indeed build VERY large ships in medieval (or post-medieval?) times, as Amos mentions, and it appears that they traveled as far as Africa, India and the western coasts of North America at one point, seeking trade in all probability. It seems that they did not attempt to colonize or settle those areas.