Proposal: Sailing, Yachting, Seamanship
Sailing and related topics are applicable to The Great Outdoors. They are a bit sparse at the moment, but I'm sure they would welcome more questions. Please try asking there.
I was aware that "The Great Outdoors" has (very) few Q/A about sailing and sailing is considered on-topic there.
There are, however, many sailing/yachting aspects, that really don't fit there well and I think many people interested in those topics don't feel comfortable to ask there or go there to answer those questions.
The same is true for "Sports SE", "Travel SE", "Law SE" and possibly other sites needed to cover the subject.
E.g. legal questions:
So I still have the opinion that there is quite a demand for such a site.