Re: Full or fin keel?
I will agree with you about that. They certainly could not have supported a modern Bermuda rig, with it's high center of effort. However, even with the tall, square sails which all but one replica use ( it should be noted that there is no evidence for this kind of sail being used and a replica fitted with a tall ship sail, in the late 1800's was the model for this sail ), they have sailed all over the world in longship replicas; a few circumnavigations, too. With a sail that is like those depicted in Viking artwork, like the replica Sigrid Storrada uses, much less ballast is needed than with the tall square sails. I am not actually saying that, if the carrack had not been adopted as the ship to use, we would still be sailing longships. I am saying that sailboat development would probably have advanced much sooner. Where you get, and how long it takes you to get there, depends on where you start.