David Burch Navigation Blog

This note outlines the subject and the questions it raises. Later articles linked at the end present some of the answers. There are two k...

There are new weather sources available as of a  month or so, that have a big impact on marine weather of US inland waters across the count...

The Automatic Identification System (AIS) is a worldwide electronic navigation system designed to prevent collisions and to facilitate marit...

The Salish Sea refers to the combined waters of the Pacific Northwest. It is highly unlikely that any Salish native ever used the term in t...