A remote control apparatus for controlling multiple propulsion units of a boat is provided. The remote control apparatus, in one embodiment, comprises a body having a first control lever and a second control lever. An electronic control unit is disposed within the body of the remote control apparatus and comprises a storage device and a contact member. The storage device can store a correction value for calibrating the control levers, while the contact member determines when correction values can be entered into the storage device when the contact member is in an enabled state. The remote control apparatus can be calibrated before the apparatus is installed on the boat, thereby eliminating the need for an operator to calibrate the remote control apparatus. A boat having the remote control apparatus described herein and a method for storing a calibration value for the control lever are also provided.