What makes a boat "Blue Water" worthy
In a nutshell:
What makes a boat "blue water" worthy? I'm looking for a specific set of criteria that can be used to evaluate almost any boat to determine if it is "blue water" worthy.
The long version & back-story:
I'm narrowing down my search for a sailboat that will act as my liveaboard home (myself, my beautiful wife, and two 11 year old twin boys) as well as to be the conduit to a future of blue water cruising/island hopping/circumnavigation (maybe?). I've looked at many many sailboats, researched each of them online as to their pros and cons, capabilities and limitations. The SailNet forum has provided a lot of insight! Personally, it has been quite a while since I've been sailing, so while I'm familiar with the techniques and such, I'm approaching this like I'm starting from scratch, and re-learning as I go. I will refrain from stating the make & model of the boat I am hoping to purchase since I do not want to limit this thread to a specific boat. Each blue-water cruiser has a different purpose for their boat, but as near as I can tell, the boat itself has to be able to withstand the rigors
In my research, I have come across many statements regarding a boat's "blue water" worthiness. However, I have not yet found a listing of the criteria that makes a boat "blue water" worthy. One of the criteria I have used in looking for a new boat is whether or not I have found evidence that the same make & model has circumnavigated. Of course there very well may have been changes made to the boats that have circumnavigated, in order to make them "blue water" worthy. I have scoured this forum, and others like SailNet to try and find a criteria list, and I've come up empty. If there's already a thread with this info, please forgive my oversight.
Some may indicate it is skill, in which case, I'd like to know which skills make the difference. As one poster in another thread sail (sorry, I don't remember who said it) "there's a lot of [insert almost any boat name here] in other countries and sea's, and they didn't fly there!"
I just realized I'm getting "windy" in my explanation...
So...in the end I'm posting this question to the masses. What makes a boat "blue water" worthy?
Thank you in advance for your insights. It will go a long way towards myself and many other newbies narrow down our selection.
(dreaming of a 37' to 45' sailboat for living aboard)