American researchers have developed a coating that can be applied to ships to protect them from barnacles.
The coating forms millions of tiny wrinkles on the ship's hull, and the wrinkles prevent the barnacles from adhering properly. Trials have shown treated ships to be free of barnacles after two years, whereas an untreated ship can have barnacle growth after just a couple of months.
We used a special paint on the hull of a trial vessel we built once that was so slippery that on the day of the launch after all the supports were removed and it was sat solely on the launch cradle we had to hurry up all the speaches and tell them to get on with it because the ship was slipping in the cradle.
As far as I'm aware it worked but we did not have much to do with the ship after it was handed over because it was a prototype being evaluated by Qinetiq and I do believe the US navy had it for a while. It had underwater cameras and sensors to monitor the deflection of the outriggers
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