Bombay Explorer 44
Join Date: Apr 2009
Thanked 132 Times in 128 Posts
Rep Power: 11
Re: Large Blister on Oday 31 Rudder
Drill hole in bottom of rudder - see how much water runs out. An egg cup or two is OK quarts are not.
Grind off blister [ start from top of vent it first.
Lock tiller or wheel and get someone to try to move the rudder [ really hard ]. while you see and feel for any evidence of internal failure.