When I used to work for Irwin Yachts we actually
produced several boats where the rudder and the
keel did not quite line up. The reason for this was
the fitting of the keel which was often done quite
sloppily. The hulls had a keel boss upon which the
keel was bolted. The area between the keel and the
boss was often a bit rough from the mold and not
smoothed off properly as there was no way to grind
it at exactly straight. Then troweled atop the keel
was a mixture of resin, cabosil, etc to bed the keel
the boss as the keel studs were drawn up and
tightened. These studs were often not exactly straight
up from the keel molding process so holes drilled
in the keel boss to match them were often much larger
than they should have been in order to allow the
angled studs to pass through the boss. Then
the tightening process was often hit and miss where
idiotic mechanics would tighten bolts on one side of
the keel all the way and then the other side all the
way. There was little consideration for 'cross
tightening'. This process often squeezed out the
resin mixture more on one side than the other and
when the mixture hardened it effectively made
the bottom surface of the keel boss crooked. Thus
the keel was on there crooked to stay.

S.Simon




"Jonathan Ganz" wrote in message ...
I just ran across a boat on the hard at a local yard and noticed
that the rudder doesn't quite line up with the keel.

Here's the pic

http://www.sailnow.com/gifs/rudder.jpg

Does someone know what caused this and how it can be
corrected?

The boat is about 30 years old at least.