Give
PolarNav a try. Free trial download. Every few months it goes on sale for 30 bucks, and the developer allows you to load it on 5 different machines per single license.
Windows, Mac, and Linux.
It's a standard chart program that uses Raster and Vector, whatever you feed it.
I like the fact that it works with ActiveCaptain. When you have a high speed connection you can tell it to download the ActiveCaptain database for as wide a region as you want. Then if you are away from a internet connection it will still display the info.
AIS also, as well as NEMA and a autopilot driver.
Worth a try - I own it and use it, along with Offshore Nav, and OpnCpn. I'm really used to OSN but I'm slowly switching over to PolarNav. OpnCpn is great but there are license issues between AC and the developers or OpnCpn.
Mike
Palm Coast FL.