R
Richard A. Marble
If your boat is in an area where it gets below freezing and you have a hollow rudder tube make sure you check to make sure there is no water setting in the tube or down inside the rudder. My 1981 Hunter 27 has a hollow rudder tube. Last year I noticed that there were some cracks in the top of the rudder. Water was seeping out of the cracks for a while but it finally dried up. I fixed the cracks but wondered how the water got in there. This fall I ran a rubber tube down inside the rudder via the rudder tube and pumped out a fair amount of water. I then put in some non-toxic anti-freeze down the tube and pumped it out again. This spring I’m going to drop the rudder down a couple of inches and check the top for cracks also. I have put tape over the top of the rudder tube until the boat is covered with a winter tarp. Now I have to find something I can cover the top of the rudder tube with. Something that will keep out the water and also let it tube breath.I talked to a surveyor about this and he said he sees cracks in most of the rudders he looks at that are set up like mine, Pearson, Ericson, Hunters, etc. He said the water either gets in at the top of the rudder where it meets the rudder post, or it gets in from the top of the rudder post if left open. The water freezes and cracks the side of the rudder. Most of these rudders are built with closed cell foam so if the water is taken out I think the only thing to worry about is rusting. Anybody got any ideas on a top vent cap for my rudder post?