A U.S. Coast Guard (USCG) Air Station Borinquen MH-65 Dolphin helicopter crew evacuated an ailing mariner from a tanker vessel approximately 50 nautical miles north of San Juan Harbor, Puerto Rico, early Tuesday morning. The helicopter crew safely transported the man to emergency medical services at Centro Medico Hospital in San Juan. Coast Guard Sector San Juan command center watchstanders received a request for assistance from the crew of the 600-foot tanker Champion Cornelia early Monday morning while the vessel was approximately 300 nautical miles north of Puerto Rico.