This is more like it. I suppose you went for two hull halves but there is a gap (and thus an naked edge) between the two hull halves. If you delete one (they are slightly different btw, I wonder why) and mirror the other one, you can join the two with no naked edge but there is still a detectable kink. In this particular case it would be good enough because there needs to be a longitudinal keelpiece added that would hide it, but still this is why I was trying to generate the entire hull in one go.

It seems possible to get much closer to the stem line with a V-shaped frame and still get the network curves to work, but there remains a gap at the pointy stem. This can be filled in several ways, but it seems hard to ensure continuity. Argh!