Re: dreaded beam, let me count...

I expect that the Cal 2-30 has the beam, but I do not have first-hand knowledge of this. The 2-30 was built in the same period as the 29 and 2-29 (the wheel version) and I believe that both share the same underbody. The big differences are that the 2-30 has a reverse transom (probably for a favorable racing rating) and a considerably smaller cockpit. I believe that the drawing on this page shows the beam: http://sailboatdata.com/viewrecord.asp?class_id=1066 Let me start by saying that I am not an engineer (though I have played one in the magazines.) The function of the beam, as I understand it, is to distribute the forces involved in keeping the mast upright. The deckmounted mast creates a downward force, which is transferred through a post in the cabin (at the main bulkhead) down to the center of the beam below the floor pan. The upper shrouds are attached to chainplates on the main bulkhead, and these exert an upward force. The beam is attached by bolts through metal tabs to the main bulkhead. Thus the upward force from the shrouds is transferred to the ends of the beam. The beam thus balances the downward force of the mast with the upward force on the shrouds, and distributes the forces to the hull below. It is an integral part of keeping the pointy parts aimed at the sky. It is important to make sure that the drainage from forward of the main bulkhead is not impeded on its way to the bilge sump. If water backs up, the plain steel of the beam will rust and rot away. (I have pictures; they are not for the faint of heart.) When Roger Jones redesigned the replacement beam, he flattened the curved bottom plate so that water would not get blocked by dirt and debris. I believe that this was a smart move. I'm happy to field questions if that would be helpful. Alfred Poor 1973 Tartan 34C #288 "Jambalaya" Former owner of 1969 Cal 29 #132