This text is the third in a series of five on electronic navigation applications. It shows how to use the OpenCPN application to perform eight essential navigation tasks: The other texts cover the Navionics (Boating), Savvy Navvy, C-MAP and SEAIQ applications respectively. Before reading this text, it’s a good idea...
This text is the fourth of five on electronic navigation applications. It covers the use of the Savvy Navvy application to perform the eight essential navigation tasks: The other texts cover the Navionics (Boating), C-MAP, OpenCPN and SEAIQ applications respectively. This text assumes that the application is installed on a...
This text focuses on electronic navigation applications for small craft. These electronic applications are used to display electronic charts. For concrete examples, this site includes five introductions to different applications: Navionics (Boating), OpenCPN, C-MAP, Savvy Navvy and SEAiq. Below, I detail the elements common to navigation applications generally found on...
This is the second of five articles on the use of electronic navigation applications. It focuses on the C-MAP application. The other texts cover the use of OpenCPN, Savy Navy, Navionics and SEAIQ. It focuses mainly on installations on tablets or cellular devices that are not connected to a sailboat’s...
This text is intended as an introduction to electronic charts. It is not an introduction to the use of chartplotters or to the use of applications showing electronic charts. It is an introduction to charts. It covers how they are designed, their types and formats. This knowledge helps to understand...
This text is the first in a series of five on electronic navigation applications. It shows you how to perform the most important navigation tasks, i.e. how to: This first text covers the Navionics (Boating) application. The other texts cover OpenCPN, Savyy Navy, C-MAP and SEAIQ respectively. Prior to reading...
This text explains a fixing technique that is applicable on fast boats. It makes use of paper charts when there is little to no space for chartwork. The technique is useful if the chartplotter fails, or if checking the validity of an electronic fix is required. I learned the technique...
Setting the scene A ship leaves New York, USA, bound for Brest, France. Assuming it takes the shortest route, what will be its departure course? If it is sailing at 15 knots, how long will it take to reach Brest? The coordinates of the two ports are known (below). City...
This short text describes two particular cases of navigation lights that have come to my attention in recent days. Both are in situations of reduced visibility, or at night. I found the examples interesting because they reveal parts of the navigation lights conventions that are less well known. Three red...
Navigation is about getting from point A to point B in a safe and fun manner. 8 fundamental concepts of arithmetic are required to do so. Read them here.
