Project Amazon had many unique features including a keel that canted 30 degrees to either side. The keel was modified before the race and this led to a fuel leak from the tanks integral to the keel. This is why she never finished the race - money was an issue as well and the plans were modified by the builder without Eric Sponberg's permission.
But she was fast - From Eric Sponberg's site:
Living aboard in Victoria Harbour