JR North wrote:
Hmmm. Through hulls are usually white nylon above the waterline and
bronze below. Chrome Zamak? Don't think so. Not on my boat, anyway.
JR

HK wrote:


http://i21.photobucket.com/albums/b2...rangeholes.jpg


If you look at the transom just above the sharpest point of the vee
bottom, you'll see what looks like a pair of round chrome or stainless
drains.

They're surely below the waterline, so I'm wondering what they drain.
Not the hull under the deck, because if you look closely, you'll see
the usual bronze drain plug at the vee.





Some boats have stainless steel through hulls above the waterline.

Here's a photo of the stern on my Parker. The plug at the vee of the
bottom is bronze, as almost all of them are. The round through hull
below the scupper is stainless and well above the waterline. It is the
drain for the livewell. There's a similar stainless round through hull
on the port side that serves as the drain hole for the bilge pump. The
fuel tank vent on the side of the hull amidships is some sort of
plastic, but that will be replaced this fall with a stainless vent.