People get pretty far with tablet apps these days (literally), and there is a good market for the development of the apps. Hardware integration is always the challenge.

See 59-north for examples of offshore sailing schools who seem to have found a good mix of modern and reliable

https://www.sailmagazine.com/cruising/navigating-by-tablet

The only thing I don’t like about a tablet is that it will ruin your night vision. Integrated marine electronics usually cater to that pretty well.