Based on an original tug of the Bay of San Francisco, the shell was slightly simplified to facilitate its reproduction. Construction is carried out with pre -cut wooden parts, the shell is latted with chopsticks.\nThe box contains the 12 -volt electric motor, the propeller shaft and the propeller, as well as all the fillings.\nThe model can be equipped with a 2 -way proportional radio control with 1 servo for the control of the rudder and 1 mechanical or electronic speed variator to control the engine in front and reverse. The radio control and the batteries must be acquired separately.