The first one was designed by Enrico Forlanini in 1898 and incorporated a tapered ladder  system after model experiments showed that lift is proportional to the square of speed.  
The first one was designed by Enrico Forlanini in 1898 and incorporated a tapered ladder  system after model experiments showed that lift is proportional to the square of speed.  Casey Baldwin set a world record in Baddeck, Nova Scotia, in 1919 when the HD-4 he built  with Alexander Graham Bell reached a speed of one hundred and fourteen kilometres per  hour. Today, the most heavily used regular route for this vehicle is between Macau and  Hong Kong. For 10 points, what is this type of watercraft based on the principle of  eliminating the hull's resistance by raising the hull by means of support arms above the  water's surface?
The first one was designed by Enrico Forlanini in 1898 and incorporated a tapered ladder  system after model experiments showed that lift is proportional to the square of speed.  
hydrofoil (do not accept hovercraft)