20170521

Marinus could not use my DXF files to calculate the various intersections needed to produce the final output. We agreed that I should provide Marinus with data of the intermediate design. This is the halfway stage between the control frames (Zero Hull Description) and the hull definition (Primary Hull Description). It is the result of many iterations aimed to steer the chines through the original control frames.

Using the intermediate design Marinus would be able to produce an identical shape with Multisurf (using Bezier Curves). And then use Multisurf, Spaceclaim and Draftsight for plate expansion of all bulkheads, decks and curved panels.

Having arrived at Marinus' cottage it took half an hour to produce the data. Marinus manually entered the data into Multisurf as I called out the numbers. It soon became clear that the aft chines were very slightly hollow. This was remedied by shifting the control frame for the 'Quarter Beam' in YOT Hull Design.

Using the intermediate design data, Multisurf produced exactly the same shape as YOT Hull Design. Clearly we were on our way to something good. Unfortunately it was not to be. I got sick and had to leave Marinus and Betsy.