David Burch

Why we should learn to navigate  (published January 2014) If you rely solely on GPS to navigate in the fog, you will not know if it […]

(published July 2012) Current flow within a few miles of a coastline is usually the result of a complex set of forces. Contributing factors include tidal […]

(published May 2012) In many inland waters, tidal current flow is a dominating factor in navigation. In special cases like the Gulf Stream, it can also […]

The invisible lines on the water that affect your rights underway  (published March 2012) Mariners who sail both U.S. inland and coastal waters are required to […]

If we were guaranteed our GPS would always work, we would not have to do much more for ocean navigation. Unfortunately, we would never know if […]