The boat is turned upright , and preparations are made to change the
sheer planks .
With a level on the dashboard and a string down the centre of the
boat a plumb bob to the centre of the keel verifies that the twist has
been removed from the hull .
Next I steamed in a few ribs . The sheer line was marked on the new
ribs and they will be used to spile and fasten in the new sheer planks