how many coats?

How many coats of varnish is recommended for the interior of the Eastport Pram?  3 or 4 coats?  I don't plan on storing the boat outdoors, so other than the times I'm using it, it will be in the garage (out of the sun).

from what I have read and been told, 3 will give you good UV coverage, more coats = more coverage.  That said, my rule of thumb is use up your varnish.  I [personally] have not had much luck storing varnish so I add extra coats until the varnish is done...