What you describe is in fact, the very same one-piece hull that I have. It is not actually a true waterline model.
My issue was that I have never seen or heard of a flat-bottomed sea-going ship...until this model, but if that is the actual hull design, then I shall sit down to a feed of humble pie.
Thank you for taking the time to follow me on this, dullcote.
Since I have forsaken this model, I had best revisit it and consider it further.
Again, thank you for your help on this.
Errol.