The hull of the Swan 47 ’Queen of Hearts’ was always build up with heavy barnacle growth. Especially the propeller was a frustrating problem explaned Jan van Donselaar, owner of the sailing yacht. The barnacles where causing a significant reducing of the speed.
Also the barnacles growth developed a very annoying propeller unbalance.
In Januari this year Jan van Donselaar has installed a Shipsonic 20 unit on the bottom inside the boat.
Jan was rather sceptical because of the disappointing experians with another ultrasonic antifouling unit in the past.