The first 1947 Sportwin produced was 4421-00001. The second was 4421-00002 & so on.
For me its cleaning and examining the motors overall condition looking for issues.
Then cleaning the fuel and electrical system, as well as the gear case, evaluating their
overall condition as well as any obvious issues. .
Tubs.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.