A 590-ft. cargo ship that ran aground has been pulled to deeper water and is being held offshore of Port Canaveral until it is safe to enter port. The Shenandoah Highway, a cargo ship carrying automobiles, left the Southampton, United Kingdom, and attempted to enter Port Canaveral. A few minutes later the ship ran aground. Coast Guard inspectors from Marine Safety Detachment Port Canaveral boarded tugs and a small boat crew from Station Port Canaveral to assess the situation. Crews didn't spot any pollution when they arrived at the Shenandoah's position and started making preparations to remove the ship from the sandy bottom. Using four contracted tugs…