Modern sailing involves a lot of technology. Multiple sensors, computers, chart plotters and communication devices have replaced sextants and paper charts long ago. The log measures the distance travelled in the water. Today the log showed 22.222 nautical miles (blue mark on the photo). Five years ago, we cast off the lines for this trip. Then, the log showed 3702 nm. So far, I have sailed 18.520 nm on this trip. This equals 34.299 km. That is roughly 1/10th of the distance to the moon.