The Grumman F6F Hellcat was a carrier-based fighter aircraft designed to replace the earlier F4F Wildcat in United States Navy (USN) service. The Hellcat competed with the faster Vought F4U Corsair for use as a carrier based fighter. However, the Corsair had significant issues with carrier landings which the Hellcat did not, allowing the Hellcat to become the Navy's dominant fighter in the second part of World War II, a position the Hellcat did not relinquish.