Rich,
You're on the money (again) on why our canopies in Unlimiteds are "almost" perfect. Almost because we have lost a driver in the 21 years in which canopies have been mandatory. George Stratton was killed at San Diego in 2000 in a freak blowover. He landed in shallow water and it appears the spar entered the front of the canopy and the resulting implosion of water snapped his neck. In those 21 years there have been over 125 blowovers in excess of 180 MPH with 4 more serious accidents, yet all drivers survived. One was Dave Vilwock in the Bud in TriCities in app. 97. In that accident the boat landed on it's canopy lid backwards at about 165 MPH and the rear of the cockpit collapsed and crushed Dave from the back. He was not breathing at the scene and revived by the dive team. The canopy shattered and severed part of his hand. Since then all of our cockpits have been redesigned to have a deflection shield on the back side. Another accident was about 93 in Kansas City when George Woods blew over the Tide at about 200MPH. The boat did a complete 360 degree landing right side up. However it landed flat and resulted in a compresson fracture in Georges back. As a result of that accident the seating has been redesigned to support the back in a different manner.
In app 86 Steve Reynolds blew over the Cellular One at Mdison at about 200MPH and the boat sheared a sponson. The air bottle departed which caused one set of problems. Since then, the air bottles have been placed inside the cockpit in a specific mounting technique that would prevent that from happening again. Further we learned that a neck can stretch pretty far and thus, clearance between the helmet and the canopy have been expanded to no less than 4 inches. The 4th. accident with serious injury was Mark Evans in the Llumar in Detroit in about 2001. He blew over at over at about 195 MPH entering the roostertail turn in front of the Detroit Yacht Club and did a 360 as well. The landing compressed his leg and caused a severe multiple break. As a result of that accident cockpits were redesigned with either "leg trays" or other structural changes to allow for leg support in the event of such a compression.
In our category (Unlimited Hydro) the safety rules will be changed immediately when a need is clearly expressed by accident results whether in our class or events elsewhere.
In 95 I blew over at Madison in the T-Plus at 203 MPH and did a 180. The boat was badly fractured but the cockpit and canopy were fine as was I. In 98 in Seattle I blew over the same boat in turn 3 at 184 MPH and again the boat was fractured but the cockpit and canopy stayed intact.
We've learned so much, yet sadly at the expense of others lives or injuries.
As for your opinion that the large offshore trubine cats will suffer significant injuries if they go over at above 180 MPH, I completely agree (and maybe much less than 180 MPH). It is only a matter of time before we read of tragedy in that class. it's just far too much surface area to take that impact without something giving. of course, that's only an opinion, and we won't know for certain until the accident happens. I think at that point, it will be too late to warn anyone......As I read various postings about how fantastic their rigs are, multiple cameras, numerous computer feedbacks, etc. I am reminded of the design team of the Titanic.....
Take care Rich, and Good luck to those who believe they are invincible
Steve
U-1