BoatWashers is now up and running on three sites on the west coast of Sweden:
www.boatwasher.se/limhamn /Malmö (2017)
The concept works fine also on the west coast.
The hull washing season starts in june and ends in oktober. It´s about one month longer washing season then in the Baltic. The washing frequence is once a month to keep the barnacles away or ”wash when you feel the boat too slow, motor too thirsty or hull too dirty (the estetics is also important for the boat owners).