This is an RC to autonomous conversion done by undergraduate researcher Dhawal Bhanderi. In this video, at 4x speed, it starts off running autonomously, Dhawal takes control as it goes under the dock, then returns it to autonomous waypoint tracking. Check out the video:
McCue, L., “Design Trends in Unmanned Systems,” SNAME/IBEX 2019, Tampa, FL, September 30, 2019.
Cooper, M. and McCue, L., “Design of a Controller for Autonomous Vessel Recovery Utilizing the Prediction of Host Vessel Motions,” Naval Engineers Journal, Volume 129, Number 1, 1 March 2017, pp. 117-131(15).