English: View of the grounded hydrofoil USS Tucumcari (PGH-2) on 16 November 1972. While participating in simulated combat operations with other amphibious forces off Vieques Island, Puerto Rico, she unexpectedly ran aground. Hitting a coral reef at 40+ knots, Tucumcari was stopped dead within the length of her hull, forcing the front strut aft and shearing off the port and starboard foils. Several crewmen were injured and two crewmen had to be air lifted by helicopter from the grounded vessel. The fate of Tucumcari was sealed during salvage operations. While attempting to blast the boat free from the coral reef using explosives, further damage was incurred. The damage was so severe that it was deemed uneconomical to repair.