The historic wreckage site of a 19th-century warship has been revealed in unprecedented detail, thanks to new state-of-the-art imagery that has documented its resting place on the ocean floor in high resolution.
The images, made possible by a collaboration between Northrop Grumman and the National Oceanic and Atmospheric Administration (NOAA), reveal the site of the historic sinking of the USS Monitor in unprecedented detail.
An outgrowth of Northrop Grumman’s Technology for Conservation initiative, the imagery was part of a cooperative effort by the U.S. defense contractor and its partners at NOAA to scan the wreckage, providing imagery of the 19th century warship’s resting place on the seafloor. The imagery also provides “evolution details about the current health of the sanctuary,” according to a statement issued by Northrop Grumman this week.
The USS Monitor
Completed near the beginning of 1862, the USS Monitor was an American Civil War-era U.S. Navy ironclad warship that served a pivotal role during the Battle of Hampton Roads. The first of this class of ships to be commissioned, its then-state-of-the-art revolving turret quickly became a staple of monitor-class warships of its time.
Within just a year of its commissioning, the USS Monitor sank off the coast of North Carolina after encountering a major storm, and its wreckage remained undiscovered until 1973. Since that time, portions of the vessel have been salvaged, including its famous gun turret and other portions, which can be seen at the Mariners’ Museum in Newport News, Virginia.
Since its rediscovery, the wreckage site was designated the country’s inaugural National Marine Sanctuary by NOAA in 1975, and since that time, NOAA has monitored the site’s health. However, several factors, including the ongoing degradation of the wreckage itself, had prompted NOAA to seek new technologies to assist with the monitoring and evaluation of the site’s status.
Northrop Grumman’s Micro Synthetic Aperture Sonar
Enter Northrop Grumman’s advanced micro synthetic aperture sonar (µSAS, or “micro-SAS”) technology, which relies on acoustics to deliver high-resolution imagery of the seafloor environment and enables some of the best imagery data about the wreckage of the USS Monitor yet obtained.
Based on the imagery, 3D and physical models of the wreckage were produced for NOAA, which also enabled a timeline of the warship’s movement from shortly before it sank to its sinking to the ocean floor in December 1862, and subsequent rediscovery in the 1970s.
“Our advanced µSAS sensor technology gives us a clear, detailed look at the USS Monitor for the first time since 1862,” said Kevin Gallagher, sonar architect on Northrop Grumman’s µSAS team, in a statement this week.
Gallagher said the company’s technologies successfully captured “the ship’s hull, interior, and surrounding debris through murky water.”
“This breakthrough shows how Northrop Grumman’s leadership in cutting-edge sensing expands what’s possible, not just in aerospace and defense, but in exploring and preserving history,” Gallagher added.
A 19th Century Marvel Resurfaces Through Technology
John Armor, director of NOAA’s Office of National Marine Sanctuaries, said his agency’s collaboration with Northrop Grumman and its µSAS capabilities has helped facilitate an unprecedented view of the USS Monitor in almost photographic quality.
“The Monitor was a technological marvel of its day, and it continues to serve the nation today by showcasing new technologies, scientific innovations, and groundbreaking educational programs,” Armor said in a statement. “These products provide a valuable baseline for future monitoring and will inspire the next generation of marine scientists and archaeologists alike.”
Armor added that “Public-private partnerships like the one with Northrop Grumman help support NOAA’s role as steward of the USS Monitor’s historic legacy and as a testbed for new technologies.”
Additional details on the landmark new imagery can be found at Northrop Grumman’s website.
Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.