Katja is our model of an elegant four-seater sports boat with inboard motor, and it has turned out to be hugely successful The model essentially consists of seven plastic parts. The deck and cabin are moulded in one piece in clear plastic. This eliminates the complex task of cutting out and installing the disks The robbe Katja can be operated free-running or with radio control In its simplest form the rudder is set for a fixed radius of turn Once equipped with a radio control system the Katja is remarkably manoeuvrable due to motorization We recommend the "robbe" Katja as an ideal fun model for the beginner.