These photos were loaned to us by a boat broker here in Marina Del Rey - he raved about sailing Shockwave years ago when the IOR class was supreme.  I was afraid to take them out of the frame, thus the reflection.  Racing took fifteen guys - and it looks as if they had "coffe grinders" oon board.  When we bought the boat we tried to take it back to original and a good thing we did.  We found that foam "batten"s had ben added to the hull to beat the IOR rule, but the battens were not glassed or sealed in.  If we had bumped something and took water through that klugy, idiotic  mess, we would have been in big trouble.  The second owner did a lot of things we changed and now feel a lot more secure in our hull.

I'O used to be Confrontation, but before that, was the first Shockwave:  built in New Zealand to get the then owner's money out of NZ.  Currency restrictions were fierce then, and he brought the boat to  Hawaii and then to San Francisco.  It won the (Hawaii) Round the State Race, was dismasted off of the southern part of the Big Islan but went on to victory.  It wond most of the Big Boat series in San Francisco Bay and was so infamous that the crew was called "the twisted sisters".  NZ humor.  The original paint job was the one I saw at the Waikiki Yacht Club when invited aboard years and years ago.  The spinnaker is about to round them down - you can see the action of the crew trying to get their weight on the high side.
That spinnaker was cut down to make a cruising spinnaker for us - yet to be flown.  We might be chicken.