Legend 40 bolt under engine

Mar 28, 2011
7
Hunter 40 Bellingham
What is the approx. 3/4" bolt for under the engine? It isn't a keel bolt as too far aft. Perhaps it's for the skeg. Is the f/g under the engine hull or a part of the pan?

The bolt has a slow leak around it and you can't access. Any ideas on what it's for and how to repair?
 
Jan 4, 2006
7,282
Hunter 310 West Vancouver, B.C.
I'll add a third vote for a picture. Taken from a distance at a couple of angles and one or two close-ups.