Glare is the enemy. We have Open CPN (used to be MaxSea but that doesn't work on Linux) on Linux notebook at chart table. Combined efforts of Omatako and BentSailor helped me to get it all set up and it works faultlessly but useless in the cockpit on a sunny day. Maybe that is not such a bad thing cos I'm sure the wee Dell would soon move on to Silicon Heaven if it had to endure the open air.
“Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life.” Terry Pratchett