Living on a former freightship (almost 100 years old). We have a mooringspot in Leeuwarden (in the northern part of the Netherlands) but only use it from november to february.
The rest of the year, we live around the Sneekermeer and run our household on a 5k/48V MultiPlus II with power from LiFePO4 batteries, fed by around 3000Wp of PV (and a backup generator when short of PV).