Submarine, ( Not a yellow one)

My first attempt at a Submarine, anyone can make a Sub. dive, the trick is to get it back to the surface again! In theory it should work, it is watertight, (Test Tank the bathroom sink) and the RC fits, just!The red tube is for the RC Aerial, Need some out of the water for it to function. Suprise was how much Ballast it needs to get it down to the waterline. It wouldn't all fit inside, so it has some screwed to the bottom outside. Test voyage is on Friday in our friends Swimming pool. If it works, then there will be a Blip, if it doesn't, a complete silence!