Learning

How to repair mooring lines

Last season took its toll on one end of a mooring line on Jean-du-Sud. A repair was in order. I took advantage of the repair to make a short video on how to repair it. I show how to tie a backsplice and a crown knot. I’ll show you how...

Two special cases of navigation lights

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...

Closest Point of Approach

On the Closest Point of Approach

The practical use of the CPA/TCPA pair is to evaluate the risk of collisions. If the CPA of a boat is zero (or close to zero), there is a collision risk and the skipper should alter the boat’s current course to increase the CPA.