Doing my research I found a private sailing teacher with his own boat that was offering the official curriculum in 7 days total and the last day would be exam day with a certified censor.
This was a much better solution for me and I even talked my wife (the later Admiral) into participating.
The course started and it came with quite a few surprises for us. The schedule for the course was quite straightforward. Breakfast on board and then studying navigation, rules and safety on boats. Then lunch and then sailing on the boat all afternoon.
Surprise number one was how tiresome for the body it is to be on a boat. As the boat is moving all the time the body can never rest. Constantly it needs to compensate for movements. Also a boat, even a big boat is a cramped place. All the time I had to duck, move up and down the ladder and even getting onboard was something giving sore muscles for a lifelong landlubber. So no long evenings in the cockpit enjoying the long light evenings of the cold north. I was fast asleep at 9 every evening.
Surprice number 2 was how nice it was to sail in a sailboat. The sound of the boat moving through the water and the wind in the sails quickly convinced me that I was not a motorboater but a sailboater.
We finished the course and both got the certificate and we were now officially real sailors. Or sort of 🙂