Making the boat the right length was pretty easy. Setting the width and height requires a few more steps, but the method is very similar:
Press the NumPad 1 key to change to the front view. Use Ctrl + MMB to zoom into the reference blocks. Use Shift + MMB to re-center the boat so that you can see all of it.
Press A to deselect all the vertices, and using any method discussed in Chapter 4, Modeling with Vertices, Edges, and Faces, select all of the vertices on the left of the 3D View.
Press G and then X to move the left-side vertices in X, until they line up with the wider reference block, as shown in the following image. Click the LMB to release the vertices.
Press A to deselect all the vertices. Select only the right-hand vertices with a method different from the one you used to select the left-hand vertices. Then, press G and then X to move them in X, until they line up with the right side of the wider reference block. Press the...