Virtual Sailor is fairly simplistic compared to FS. In Virtual Sailor there are no real tasks to perform other than operating your boat/ship. Each boat/ship has a 'boat.cfg' file from which you can set values such as fuel, stability, area of sails, etc. It has multiplayer functionality but I've never used it. I just basically sail from point A to point B with an occasional gun/torpedo attack on unsuspecting vessels.

Here are a few screenies of Virtual Sailor's more advanced features.
Brian
Adjust weather, forecasted weather, time of day, etc.

A pretty nice GPS.

Radar...which really works.

This window allows you to create/manage waypoints and move your boat/ship...amongst other things.
