WHITE HAWK hydrofoil (Anglo-American project, early 1950s)

[Grey Havoc]

This was originally a private project, that came to be tested by the USN & Grumman Corporation. Though promising, adoption by the Navy & further development was curtailed by circumstances (including a 'pushy lawyer'!).

http://gizmodo.com/the-evolution-of-flying-ships-1635342213/+TylerRogoway

http://www.foils.org/henning.htm​