I am in the process of converting my tug EMANUEL to radio control, it was built by my granddad for my 6th birthday in 1955. It is 16" long 3.75" beam. It originally ran for about 40 minutes on a bike lamp battery. Set rudder and let go. Run round pond and collect, with luck.
It's the small one in the picture. I intend to use the original motor coupled to M sonic ESC. And mini servo for rudder. Will post more pictures as refitting progresses. Pictures won't upload.