I drilled a hole in my boat today, good thing it was not in the water. Actually it didn't matter because I drilled it just below the gunnel on the starboard side just above the cove stripe. The hole is for a new vent for the holding tank which is now located forward in the V-bunk. The vent line that has served the tank is a 1/2" hose that runs from the tank to the transom up under the starboard caprail. The common knowledge appears to be that it is too small and too far from the tank to allow enough air movement. So I'm putting in an 1 1/8" hose and fittings that will be within 10' of the tank. But all that is not the reason for this thread! I'm posting a photo of the plug that was removed when I drilled the hole. I had never had a reason to drill this high on the hull and was impressed with the makeup of the hull, core and inner skin. The plug is just slightly over 1" thick. A slight skin of gelcoat, about 1/4" of the outer hull, 5/8" of an Airex type foam, And an 1/8" of inner fiberglass skin. While I'm not very well versed in types of hull construction, I am pretty impressed with this composite structure. I don't think more modern hulls are put together as well. Just another thing about these boats that make me like them more and more. That's very good considering that Dana just completed her 41st season of cruising the East Coast. Jim PS: Merry Christmas, Happy Hannukah and a Happy New year to all.