Having been on the ocean in the area that Columbus is said to have landed on and discovered in 1492, my mind was brought back to sailing in those days, versus sailing in these days. The ocean is so vast, the skyline marked by nothing but water, that one wonders how it was they sailed and found places in those days.
It is a real testimony to the spirit of those men that they could sail the ocean, using a sextant and their judgment, wind power, and wooden ships, and still get to where they needed to go. It is a miracle they found the new world.
Today we have computers aided by GPS navigation satellites that can tell a ship Captain exactly where the ship is within 5 feet. The same computer drives the ship propulsion and navigation systems to they can get to where they need to be right on time. We have miracles today too, but it is the mechanical kind rather than those that came from men with only bravery and a crude way of navigation.