With scaled plans I needed to move them back to the right position.

The plan was scaled according to the working plane value only, as the second one always should be equal to zero (in stations view it is a pair of Y and Z = 0, in waterlines view - X and Y = 0, in buttocks view - X and Z = 0). Then I re-scaled the scans: first I checked the current coordinate values (in Delftship coordinate box) of a characteristic point on the linear scale, then with right-click I chose the scaling option and I filled the box with the proper coordinate value. To make a scan fit this scale I needed a linear scale on drawings - in every view I moved the scan so its zero point would lie directly in 0,0 point. I always build a model building with scale 1/1, which is the actual size of a ship. I began by setting (for each view) proportional scaling or “uniform scaling in the X and Y”: Now, I had to calibrate and adjust the model. I added scans to the just created Delftship file (as a background image, just right-click on a view port), each one to the appropriate view (Fig. A small window dynamically indicates the coordinates of pointer position on the working plane: The YZ plane defines the plane of stations (the value of X determines stations positions), XZ - buttocks (Y value determines the buttocks positions), XY – waterlines (Z value determines the waterlines positions). The Delftship model is oriented relative to the coordinate, orthogonal system: the X-axis determines the length of the model, Y - width, Z - height. When starting the work with Delftship I needed set design parameters according to the details given on the plans, that is, I gave the actual length and width of the individual, of course, in units indicated on the original plans:

Additionally, I noticed the Delftship “likes” the model to be pointing to the right, so I mirrored Carleton drawings. axes and planes defining theoretical lines) were vertically or horizontally aligned. Now, I had to adjust the scans, this means I had to rotate them so that all guides (i.e. Each drawing should contain the linear scale, for proper scaling.

At the beginning, using a bitmap graphics program I divided the scan into 3 separate files containing stations, waterlines and buttocks. The scan resolution is not particularly stunning, but for our purposes is good enough. The lines of the CARLETON (1776) come from the collection of the Royal Museums Greenwich The topic shows how to use the free program Delftship (and build a ship’s hull basing on theoretical lines.

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