dsty
Bronze Member
I think that anyone who is interested in drill holes should study " Viking Mooring Holes " and the tools they used, seems that they could make a 4 inch X 4 inch drill hole in around 5 minutes, the original ones were used to secure the ship to shore at each end, sleeping aboard the ship they only had to whip the stake out of the mooring hole and be gone, out of harms way. Then along came the other uses such as directional / distances / what to look for, other inforation as needed. Lots more complated than an arrow or cross that was so common for direction, The mooring holes were angled to give the best / strongest pull toward the ship, ship length's, location of the cargo hole are all important parts of information necessary when you get to your destination.