I own a Cal 2-29. I had to replace the beam under the main bulkhead on mine. I made a new one out of stainless steel
. To remove it you must remove the main bulkhead, cut the floor pan at the center of the hump, remove the floor pan in the head
area and pry out the old beam ( crescent shaped ). The flaw is that the original is made from carbon steel
and has the drain from the ice chest locker draining onto the beam. Mine was rusted almost 25 percent away. The removal
to these items is best done with a dremel tool. It was not an easy job and can not be done unless in a boatyard. Usually you will be replacing the bulkhead as well. You can see the beam through the hole that the through hull
valve for the head
fits through the head (marine toilet) support platform. With the through hull
removed, you can actually reach this beam with your hand. This access hole is big enough to see the end of the beam.