has specs on the Cape Dory boats, and points to
which lists the Cape Dory 28 specs for stability, etc.
Questions of seaworthy or bluewater capable...I don't know the boat but those are areas where experience, rather than numbers, will mean more to you. Figure whatever boat you start with, you may want to change at least once before taking off around the globe. Personal decisions about sail balance, seakindly motion, proper layouts and such.