Martinique opens up a series of coral islands that are very difficult from the viewpoint of navigation.
We rely on the GLONASS system that has never let us down yet.
Passages in the coral reefs are snaky and have a huge difference in depths.
The reality is that a mistake of about 10 meters may lead to nasty consequences.
Right after beacon MA6, the depth falls sharply. This makes the precision of positioning especially important, the more so as the fairway is buoy-enclosed only when approaching the central ports.
A good test for the GLONASS system’s positioning precision.