Lift platform in the boat from the dock.
Yxlö, www.yxlomarin.com is a company that adapts boats today (last checked May 2017).
Ohlssons Metall; no longer available.
Paid for by
Hanterbara Båtar AB in Sweden is building accessible aluminum boats, see www.spinalistips.se/tips-tillganglig-motorbat-1190.html
This tip is from 2005