[patrickoday30]

I have a 1980 oday 30 with fin keel and have been wondering for some time about the circular metal plate with female NPT thread that's mounted / embedded into the keel. It's on one side a few inches below where the keel meets the hull. It's about 2" in diameter, and the threading about 1/2 inch. Could it be part of a bonding system? If so, just screw in a pencil zinc?

Sorry I didn't attach a picture, but I'm hoping someone can help me put this long-standing mystery to rest!

Thanks,
Patrick

 

[tempest]

I have a 1980 oday 30 with fin keel and have been wondering for some time about the circular metal plate with female NPT thread that's mounted / embedded into the keel. It's on one side a few inches below where the keel meets the hull. It's about 2" in diameter, and the threading about 1/2 inch. Could it be part of a bonding system? If so, just screw in a pencil zinc?

Sorry I didn't attach a picture, but I'm hoping someone can help me put this long-standing mystery to rest!

Thanks,
Patrick

Garboard Drain Plugs

Sounds like it be a garboard drain plug ?

Used to drain the bilge

 

[eherlihy]

Garboard Drain Plugs

Sounds like it be a garboard drain plug ?

Used to drain the bilge

+1

It is used when the boat is on the hard to allow water out of the bilge. In the slip, it allows water into the bilge.

 

[patrickoday30]

Hi all - just to close out this thread, I am attaching a picture of the referenced bolt hole in the keel. Seems that it is a garboard drain plug....although I cannot find any hole leading to it in the bilge.

 

[deniseO30]

The bilge is like a box the hole would not show since it's into the bilge above the keel core and below or next to the bilge box. I don't have that on my boat. Do you have a bolt on keel too? My 1982 was the only one that I know of with an encapsulated keel.

 

[patrickoday30]

Great input, that's a very helpful explanation. I have always assumed that the keel is encapsulated, as there is no evidence of keel bolts in the "bilge box". It's a 1980 Oday 30. Correct me if I'm looking for the keel bolts in the wrong place though please....

 

[deniseO30]

there are none. the stringers are massive as you can see.