Make sure that you saved the file at the end of the previous Time for action – making the boat smaller section. You are going to convert your Subdivision Surface to a mesh object using the following steps:
Make sure you are in Object Mode. Rotate the hull so you can see it well.
Press Alt + C to convert the surface into a mesh object. Select Mesh from Curve/Meta/Surf/Text from the menu with the LMB, as shown in the following screenshot:
Press Tab to go into Edit Mode. The control points are gone. You now have a boat hull.
Press A to deselect all selected vertices.