SailNavSim boat positions density heatmap

by u/ls65536

This
is a heatmap showing the density of virtual boat positions (captured
every 12 hours in this case) over the past couple years in the
SailNavSim sailing navigation simulator [1].

Data was extracted from SailNavSim’s SQLite database, and the image was generated using Gnuplot.

[1] https://8bitbyte.ca/sailnavsim/