Based on a topsail schooner model
 Opening of the deck by a roof  and two removable gratings.
 Internal supports for RC.
 2 pulleys to move the winch back and forth.
 1 rudder  mobile  in his  ruffle tube
 2.4GHz 2-channel transmitter with nickel cadmium batteries
 Receiver with nickel cadmium battery
 1 winch for adjusting the sails
 1 rudder brain
 on off button
 battery charger
 Delivered loaded, fully assembled and functional.