I've got VS7 and have had it and earlier versions for about 6 years. Graphically it's not bad but is beginning to look old nowadays. I've never had Ship Simulator.
There's no racing or competitions in VS7 (except I think online) so i  just stooge around solo for pleasure.
The wind, waves and swell are very well done and fully adjustable, so it's a great way to learn sailing and you're liable to get seasick.
It's dirt cheap, you buy via download and there are dozens of free addon boats and subs including this one-



Below decks aboard the Bounty looking aft-