Not really, oxygen yes, but drinkable water, vitamin C (lack of it causes scurvy), and food was really lacking (no fishing in the high seas). At the 1400's tec

Not really, oxygen yes, but drinkable water, vitamin C (lack of it causes scurvy), and food was really lacking (no fishing in the high seas). At the 1400's tech level it was not an easy voyage, maybe easier than going to mars at our current tech level, but not a lot easier.