I am slowly rebuilding a wooden Snipe class sail boat. The boat sat in an
old garage/barn for many years. One of the results of age is that the mast
has come apart near the top where it had been finger jointed(?) together.

First of all, is it possible to re-glue this joint?
Second, what should I use? Will Elmer's wood glue hold or is there something
better I need to know about.

Any help will be greatly appreciated.
Thanks!