The annual Battle of Hampton Roads Commemoration Day will be held from 10 a.m. to 3 p.m. Saturday at the Mariners’ Museum and Park, 100 Museum Drive, Newport News. Among the activities will be the first public unveiling of never-before-seen high-resolution sonar imagery of the USS Monitor, the Civil War ironclad warship that lies at the bottom of the Atlantic off the coast of Cape Hatteras. The battle of the Monitor and Merrimac was fought on March 8, 1862. The day’s featured presentation, “Exploring Monitor with 21st Century Technology,” will be held from 10-11 a.m. in the Explorers Theater. In partnership with the National Oceanic and Atmospheric Administration’s Monitor National Marine Sanctuary and Northrop Grumman, the museum will reveal new three-dimensional digital reconstructions of the Monitor as it appeared in 1862, alongside detailed scans of the wreck as it rests today on the ocean floor. Captured using an Uncrewed Underwater Vehicle equipped with Northrop Grumman’s micro s...