These had to be replaced due to rot in the timber. The blocks are made up in oak between 2 frame spaces and through bolted, the forward bolts will have pads on them these cover 2 frames on the underside of hull. The outside block covers 2 frames through bolted these will have pads on the inside. The forward frame is made thicker and wider to take the face plate of the brass stern tube. This also gives better fixing as it is not end grain. This is reduced at the frame ends to match the existing frames.
When fitting the block we try to match up the existing bore hole on the bench this helps keeping things in line on the final bore of the tube.
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