That looks about the same size as mine G, just a lot less cluttered. Mine needs digging out with a JCB.
I notice that you also have an inkling towards model boats.
This is the last one I nearly completed before things started to go pear shaped in my life and I had to give them up. A very modified kit, everything made to work, fire monitors, launch crane, even a Becker rudder and bow thruster.
Motor controllers, also showing the diamond plate deck.
All fire monitors and radar plus the signal flag on the side of the wheelhouse all R/C operated
Even the crane was operational to launch a dinghy over the back. Also showing the bow thruster and part of the rudder.
This is the variable profile Becker rudder.
My steamer, a much modified commercial hull, this was steamed almost every weekend for ten years.
My paddler, a very much modified kit, proportional floats so that it could turn in it's own length, a lot of model engineering went into this.
This was another that I had to get rid of, 4ft long, and it weighed well over 100lbs when the battery was installed. Scratch built on an old fibreglass hull I managed to get hold of. Again everything working including the realistic 'Puffer' smoke from the funnel. The marks on the side show where the open to water ballast tanks were. Once the battery was put in, two taps were opened and the boat sank to the correct level. The weathered effect was intentional.
Sorry to have diverted your post somewhat, but I thought you might like to see what other people used to get up to.
John