I wouldn't paper piece that block, because it's easy to piece. In the photo, the large sail is a half square triangle. The small sail is also a half square triangle, with a white rectangle above it. The bottom of the boat is a rectangle with a square sewn over each corner on the diagonal, point to point, then the unneeded triangles are cut off of it. The entire block is made of 3 simply pieced sections (2 sails and boat bottom) plus one lonely white rectangle. Since you have already drawn it out on graph paper, just make sure you have the seam lines on there, assign a size to each square unit on the graph paper to end up with the desired block size.