Boats and Yachts can exist in different environments. You can have Fresh or Salt Water or can be in Cold or Warm water and even in brackish water.  But one thing is for sure, if you have your Yacht or Boat in Salt Water, you need to make sure your bottom is Painted in short boat bottom is maintained properly for better performance. For more details, visit https://www.barnaclebusters.com/services/boat-bottom-cleaning/