This is a version of Glynn Guests Norwegian ferry free plan. I built my one from obechi and not balsa and she was top heavy, After much thought I sawed my one through just at the foredeck level and added 8 inches with appropriate lead ballast. I turned her into a cargo carrier which is exactly what was done to many of the ferries after WW2 due to the high cost of steel.
The various derricks are made from an old 27Mhtz aerial so very light in weight. They do articulate.

My model runs on a 555 motor on 6 volts with a 45mm brass prop, but there is enough power lower down to control the speed on the Tx, trim control alone. She has had a lot of admirers and running at slow speed my initial problem duck turned into a swan.