If you are asking of the wood of the stem and the sternpost are exposed, visible, and not covered with planking, the answer is yes. The surface of the planking at the stern is flush with the surface of the stem. So, you will have to submerge the planking into the deadwood such that the there is no stepped edge where the planking meets the stem.
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Showing halfway through final planking of the bottom. Do you see how the final planks are even in depth with the sternpost? Lower down, you can see how I dug out the first planking near the sternpost with a sharp, chisel edged razor knife and reinforces the soft balsa underneath with some yellow PVA glue in that area that is triangle shaped. No also that the planking of the deadwood is flush with the sides of the keel. All this shaping means extra knife work, but it's the only way at this stage to make the plans correct.
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