Stationary restaurant vessel at Mainz, Germany, on the river Rhine.
Built 1964 at Scheveningen (Netherlands) as fishing vessel.
In 1975 converted to restaurant vessel with three masts, at Groningen (Netherlands).
In 1986 to Mainz (Germany), details at:

https://www.binnenvaart.eu/vissersvaartuig/22025-pieter-van-aemstel.html