automatically create cruise maps


so I have a project here that requires to create maps of cruises (with ships) (e.g. cruises of Carnival Cruise Line or RCCL or MSC). So usually these maps are painted by hand either really painted or edited in some sort of map editor. The challenge is that you only have the GPS coordinates of the ports where the ship is calling. Since there are no streets all of the routing mechanism just use straight lines even if an island is in between.

So what I’m looking for is a way to just enter GPS coordinates and then have a tool generating cruise route maps automatically.

That should be the result:

Cross-posted here: