A thames lighter is really simple to make, it is all slab sided, no shaped bows or stern runs to make. The deck fittings are simple, 5 x bollards one on each corner, a shallow combing hatch each end, short funnel aft a bollard right aft, a large ring with a length of 7" grass rope spliced to it about 25ft in length right forward and a small simple barrel windlass between two bits forward.