Install xtide-coastline by entering the following commands in the terminal:
sudo apt update sudo apt install xtide-coastline
Description:
coastline data for xtide
XTide is a package that provides tide and current predictions in a wide variety of formats. This package enables the xtide package to display the world's coastlines (World Vector Shoreline data) when displaying the Earth to select tidal stations. . Works automatically with xtide 2.9.5-2; See README.Debian if using an earlier version.
Version: 20020202-1
Section: universe/science