Sailing Terminology - Broaching
A sailboat broaches when she suddenly "heads up" (towards the wind) due to excessive power in the sails combined with a stalling rudder preventing the boat from "bearing away" (away from the wind). In a dingy this means an almost certain capsize, with medium sized yachts like the one shown, a capsize is possible, but good handling should prevent it. On larger yachts, with lead or concrete keels, dramatic heeling is the most one should expect (unless combined with other factors like a rolling swell or large waves).
In all cases, if can be pretty scary, that said, these guys did it deliberately as a test and look pretty calm.#Sailing #yachting