C'mon Dave, I'm sure you know the Templars that went to Portugal under the new order of the Knights of Christ founded the famous navigation school there, and that Prince Henry the Navigator was of the Knights of Christ. Also it is well known that the Templars brought The Arab secrets of Navigation to Europe.
Now wait a minute...we've gone back and forth a few times on the need for Templars to get the hell out of Europe, with me arguing that Portugal was a safe place and you saying that it wasn't, and now you're telling me that they did go to Portugal? Or am I confusing you with someone else?
What was that school named?
The Templars brought "The Arab secrets of Navigation" to Europe? Err...maybe? What secrets in particular? Are you talking about the magnetic compass?
I understand that the caravel became a thing during Henry's lifetime. What was the significance of that invention to the Age of Discovery? (I gave you a pretty solid hint there.)
My mentioning of the respect the Norse sailors developed for the Great Lakes was to inform you that the Great Lakes are as serious to sail as the Ocean
and that the Mediterranean deserves the same respect. There is no doubt the Templar sailors had the ability to sail the ocean blue, perhaps not straight across following a latitude (of course as we all know straight across is not the shortest route, right?), but certainly following the well established (after 300 years) Norse routes.
No, I get it. I'm no navigator, but I've spent a few years on the ocean. Even inland seas are no joke. However, in the case of the Templars going to the Holy Land, navigation becomes much simpler when...
A. You know that if you keep heading east, you will get to where you want to be, and
B. If you deviate north or south, you will hit the shore, and following that shore will get you to where you're going, and
C. The Mediterranean is not as safe as a swimming pool, but I'd call it significantly safer, most of the time, than the North Atlantic. Your big threat was pirates, not weather.
Oh, and
D. In ~1200 AD, continental Europeans were not building ships that had a high probability of surviving a transatlantic journey. (The Norse could build one that did the job, but apparently nobody had asked them. Or else they had, looked at the ships that the Norse were using, and said, "F that. We'll stick with what we have, thank you very much.")