Tough water-repellent coating could lead to faster ships
 

You've no doubt seen footage of water-repellent coatings that seemingly defy the laws of nature. However, they have a catch: they're often too fragile to be useful in situations where they're likely to face a lot of abuse, whether it's the clothes on...

https://www.engadget.com/2017/04/09/...llent-coating/