My dad used to work for a ship servicing & repair shop ("Humber Ship Repairers"), now defunct. I remember them doing this to a Sally Line ferry. It was fascinat

My dad used to work for a ship servicing & repair shop ("Humber Ship Repairers"), now defunct. I remember them doing this to a Sally Line ferry. It was fascinating seeing the progress when we occasionally drove past the dry dock. Very little for a while as things were cut through internally, then suddenly one trip the thing was in two halves and the new middle was being put in place.