HUNTER 31 sailboat specifications and details on sailboatdata.com
I guess one has to define blue water
. Trans atlantic, Miami
or Ft Lauderdale to Miami
( ok I know thats coastal). I would feel safe on the latter of those two. No problems. For a Trans-at or longer journey, you may want to look at the stability info compared to a few others.
Hunters are a wonderful boat and get a lot of bagging around here. But they are wonderful boats because they do exactly what they were designed for. Booze Cruising and weekends with the family
-and they do this job very very well at a sensible price