Hi Jean-Paul,

Thanks for taking a look. Yes, I realised that she is twin screw but have to admit, I find the design a little strange. The cutout in the hull is what I would have expected for a single screw (assuming of course I'm looking at the plan correctly). Perhaps the hole through there was simply to leave enough room for closely placed propellers? Let me know if this is wrong (I hope it isn't because I found it devilishly hard to do).

I basically used your network technique but did it in halves and mirrored. I blended the two halves. Stern around rudder/prop area required a lot of point manipulation. Even then I didn't notice that my stern had a couple of substantial undercuts. I'm attempting a cut & shut now which looks like it will work. These are not easy things to model!