Dry fish can be stored for years, thats what they used as food on their sea voyages. The only other thing they had to store was water. Their largest ships was 50meters, 150feet long and they often travelled in large groups of 10-30 ships. They did often sail for months in a strech, but they could technology travel for years concerning food, with some water refills on the way. But they wouldent have to, fast ships, so its just teoreticly.
Easy sail, We know they sailed from iran to new foundland, and that is much further. Maybe easy was a bit self confident, but they had the technology to do it. And the west coast, hawai and new zeeland would have been a natural continuation of their exploring.
Edited by whitegandalf, 26 October 2012 - 06:29 PM.