Light manual turning gear for ship shafting

The invention relates to the field of ship main power shafting, in particular to a ship shafting light manual turning gear, and aims to solve the problems that for a light ship shafting without steam turbine power, the shafting is small, the use frequency of the turning gear is not very high, an electric turning gear is often large in size, power needs to be supplied to a motor, a control module needs to be added, and the working efficiency is low. According to the scheme, a worm and a turbine are meshed with each other, one end of the turbine is rotationally connected with a box body, a turbine mandrel is arranged in the turbine, one end of the turbine mandrel is rotationally connected with a movable handle, and the movable handle is used for moving the position of the turbine mandrel in the turbine; the turbine mandrel and the turbine are in key fit and rotate synchronously all the time, the other end of the turbine mandrel is connected with the accessory gear, the accessory gear is arranged outside the tur