What is the worlds fastest boat?

Answer 1

Fastest Boat: "Spirit of Australia"

Proving, like the X-15, that old-fashioned knowhow is often better than new technology, the fastest boat in history was built in the 1970s by a man named Ken Warby in his shed. "The Spirit of Australia" set the world water speed record of 317.6 mph all the way back in 1978, and the record still stands today. Apparently, chasing this record is one of the most dangerous endeavors in the world, since around 85-percent of those who give it a go die in their attempts. For the complete, grisly record, check out this great article from Wired.

http://www.switched.com/2009/06/10/worlds-fastest-planes-trains-and-automobiles-and-other-stuff/

Answer 2

Jefferson PT37 speedboat