Hi Gord,

re:
> I have redone everything, so this is the hull before the decks are cut down.

Unfortunately it seems like a step backwards in surface quality. You've now got a lot of separate surface strips that are not smooth to each other:



That's going to make it more difficult to generate offset surfaces to thicken it. You could try thickening it by directly modeling an inner wall instead of using Offset to make it like you could use if the surface quality was better.

The back end still suffers from 3 sided areas that are collapsing to a point while simultaneously trying to go a transition area.



As described above, usually these kinds of transitions are better to do as a separate surface using fillet or blend, rather than trying to construct a surface that tries to negotiate that type of shape change directly.

The triangular collapsed down to a point area here is not quite as chaotic and messy as previous versions, but it will still have problems trying to generate an offset surface from it. Offset surfaces have some general difficulty dealing with pole points where a surface edge collapses down to a single point. That's why I've been recommending over and over again not to try and model the back part this way.

- Michael