What’s this hole for?

[Winterhawk]

I’m finishing up my hull to keel joint. I have two thru hulls just above the joint, one starboard, one port.
One is for raw water intake, what’s the other for?

[stevebotts]

Another raw water intake of some kind? .... although I'm at a loss to think what for since the head is a ways away. I've been told that some of the early boats had an elaborate system of drains for the cockpit and deck, etc., but I don't know where the water drained. Bob Boynton could answer that one, since he ripped it out of his boat. Other penetrations are specialized thru hull fittings like a knot meter could be just above the joint. If its beyond the turn of the hull on the more horizontal surface it could be for a depth sounder. It's not for one of those is it?

[Winterhawk]

not the head for sure.
This is a MKIII.
not for the cockpit, it's just about center of the keel, just above, 2 inches or so from the keel joint. Maybe a knot meter. The is a hole fo rthe depth under the sbd sette.
Well, thanks for the info

[Winterhawk]

One of the guys in the yard seconds the speed log.

More stuff to add to the shopping list.....