PhilH, I humbly apologise, I'm already giving myself a good talking to and a sound thrashing with a branch😂😂😂.
Counselling will begin tomorrow in the confines of the garage.
My punishment is to build something 🤣

This is going to be a slow process, fixed the props onto the shafts yesterday with good old araldite/ epoxy. Now letting them fully dry before testing. It's a bit nippy in the garage workshop and still lot's of other job's to get done before going back to work 😑 🙃 😂

Managed to fit the motors, mounted on a block of rubber. Will possibly have to readjust them when I put the blade's on. Trial and error at this moment in time whenever I get a spare minute 😊

Had to have a bit of a think 🤔 but I believe I have a solution 😅.
Due to the constraints of this size, I'd repurposed two motors from my original "steampunk subsubmarine " which had originally been on a toy aeroplane which was destined for the bin. Only problem is that due to their size, although they fit inside the hull, I needed some prop shafts and couplings to link it all up. My solution has been some "copper " welding sticks/rods which are the right diameter for the props and then some plastic sheafing from electrical cable which fits nicely onto the shafts. The only drawback is that they are still too big for the motor shafts. A little bit of out of the box thinking and searching, I have found a tube which usually is found on the small cans of spray oil and this fits onto the motor shaft which in turn fits snugly inside. I've had to adapt the exit for the prop shafts
as the model design wasn't in alignment. Have some end caps from some injection medication that my wife has been on, so although not correct if for this build it works that's fine as it won't be seen when in the water. Currently spending time with daughter who is visiting so only working in fit's and starts, progress will be slow 🐌.

Good morning everyone, thanks for the comments so far 😊.
Should have said in the initial post, that this if it works will only run as a surface model. My engineering/mechanical skills are not that advanced. If I can get this to work, hopefully I can move on to the realms of a larger version which would be able to submerge. In the event that this does become a submersible, then I think I might have a problem 😅 🤣

Fancied a different challenge so picked this up a little while ago.
Now that the Calypso is complete and I have space again, just started this build.
As you can see from the box it measures in at 51cm or just under 2 foot in old money 💰. This will be a first as I've never built a submarine, I have some tiny motors which I will try to fit, these have come off my old steampunk which in principle worked but not as I'd wanted so these if they fit will be repurposed. Also a mini esc which should fit. Not sure about servo for the rudder due to space, but hey ho, this is a bit of an experiment for me. At the end of the day if this doesn't work, I get to practice not only with the mechanics but also with my newly acquired airbrush. So far, the 2 halves of the hull have been joined and the "cowlings/covers for the prop shafts. Any cracks have been filled and sanded, next check to make sure all is watertight and then I'll look at installing the motors etc. Fun times ahead 😀