43ft range safety launch
Scale 1:1. A plan showing the torsion shaft assembly (2.75 inch crs) from a Thornycroft 43ft range safety launch [former seaplane tender]. This plan relates to vessel numbers 1640, 1641, 1642, 1643, 1644 and 1645 [Thornycroft numbers 2906, 2907, 2908, 2909, 2910 and 2911].