|See... size is important|
Speedy it is. It's probably so dangerous we ought to wear helmets like those sissies in the Americas Cup. Duh. Maybe not. We can only fall into the water here. Soft water full of itsu bitsy bits. It probably won't hurt much, and the hull probably won't break into sharp edges either.
|Head on / chicken|
So, if the speed is 43 knots, then a head to head crash would be like hitting full stop from 86knots or so? Maybe those helmets are a good idea after all, teehee. You need to react pretty fast here. Sometimes you only have very few seconds from first visual to impact.