Preparation for Beam Shelf Replacement

Where the starboard hull side is rotted the beam shelf is actually broken in two (see first image). Therefore, we need to remove the old sections in order to fit a new one. We retained the old beam shelf while we replaced the hull frames, as it gave us a good point to bend and clamp the new frames to. Now, with the new frames in place and with the hull shape also supported by the external longitudinal beams, that we previously laminated in place, the beam shelf can come out.

The beam shelf supports the ends of the deck beams and creates a significant longitudinal strength member at the sheer. The second picture shows the same area on the port side. Here you can see the chainplate attachments and the hanging and lodging knees that further reinforce this area.

We decided not to replace the full length of the beam shelf, as this would become complicated at the bow and the stern. Instead we chose to replace about two thirds of it. Scarfing the new timber onto the old at each end.