A historic ocean liner that once defined the golden age of Atlantic travel is preparing for its final transformation. This month, explosives will be used to breach the hull of the former SS United States, sinking the vessel approximately 25 miles off the Florida Panhandle. The operation is set to establish the ship as the world’s largest artificial reef. The sinking will give new life to a vessel whose once-striking black-and-red exterior paint has been faded by the sun as rust spots pockmark a hull that ferried American luminaries and European royals across the Atlantic Ocean. “Artificial reefs are tools, not inherently good or bad solutions.
Upon resting on the seafloor at a depth of 180 feet, the massive 990-foot vessel will serve as the 21st and most significant addition to the Florida Panhandle Shipwreck Trail. This corridor, which stretches roughly 150 miles between Pensacola and Port St. Joe, has been a central feature for marine biodiversity and tourism since it was formally established in 2012 to stimulate the local economy following the 2010 Deepwater Horizon oil spill. The trail, with shipwrecks dating back to 1942, has become a haven for both marine life and recreational scuba divers since its official establishment in 2012 — an effort to boost tourism after the devastating 2010 Deepwater Horizon oil spill.
The SS United States was far more than a luxury cruiser. Constructed in 1950 at a cost exceeding $70 million, the project was a collaborative financial effort between the US Navy, the Department of Transportation’s Maritime Administration, and the United States Lines. It was designed to function as a military asset capable of rapid conversion for troop transport, moving up to 14,000 soldiers when necessary. Its 1952 maiden voyage set a speed record that remains unbroken, crossing the Atlantic at approximately 42 mph in under three days and 11 hours. According to at 990-feet – larger than the Titanic — and with a top speed of 44 mph set during sea trials, it was also considered a military asset, so much so that when construction began in 1950, its more than $70 million cost was divided among the Transportation Department’s Maritime Administration, the US Navy and the commercial United, Lines, according to the Naval Historical Foundation. With its normal complement of 1,900 to 2,000 passengers replaced by up to 14,000 troops, the ship was designed so that it could quickly be converted for troop transport. According to largely made of aluminum to conserve weight, SS United, Was about 10 mph faster than today’s cruise ships, which have more steel construction. It was the most prestigious way to cross the Atlantic, during its heyday in the 1950s and 1960s.
During its prime, the ship hosted prominent figures including presidents Harry Truman, Dwight Eisenhower, John F. Kennedy, and Bill Clinton, alongside iconic cultural figures such as Marilyn Monroe and Marlon Brando. However, its dominance ended rapidly after 1958 with the rise of commercial jet travel. Maritime historian Sal Mercogliano noted that the ship represented the culmination of a centuries-long competition to bridge the North Atlantic, and its scheduled sinking marks the definitive conclusion of the great ocean liner era. International and Hollywood royalty — including Marlon Brando, Sean Connery, Marilyn Monroe, Judy Garland, Prince Rainer of Monaco and the Duke and Duchess of Windsor, among others — used its staterooms. But its reign as king of the Atlantic would not last long.
The ship’s path to the seafloor was finalized in 2024 after it faced potential eviction from its Philadelphia berth. Okaloosa County intervened with a $1 million purchase offer, leading to an 1,800-mile tow to Mobile, Alabama. There, the vessel underwent rigorous environmental remediation to remove hazardous materials, and its interior was gutted to ensure safety for the marine environment. Despite its age, the conservancy reports that 90% of the original hull remains intact, a testament to its battleship-grade construction. In 2024, with it facing eviction from the Philadelphia shipyard where it had been tied up for 30 years, owners faced a choice: sell it for scrap or sell it to become an artificial reef. It was then that Okaloosa County, Florida, stepped in with a $1 million bid to buy it, according to the county’s website.
Marine scientists expect the site to flourish quickly. Michael Parsons, a professor at Florida Gulf Coast University, noted that fish, bacteria, and algae will begin colonizing the structure within days. The artificial reef is designed to serve as a vital nursery and refuge for species such as snapper, grouper, and amberjack. Beyond its environmental impact, the project aims to bolster local businesses including dive charters, fishing operations, and hospitality providers. Previous wrecks have attracted large numbers of fish like snapper, grouper, amberjack, angelfish and barracuda as well as sea urchin and corals, according to the diving trail’s website. According to “In the open ocean, having hiding spots or things to grow on can increase survival, so they can serve as nurseries or population refuges for some species, particularly fish,”, Melissa May, associate professor of marine biology at FGCU. According to while the ship is expected to quickly attract marine life, measuring its effectiveness depends on the reason it was deployed,, Chris Stallings, a professor of biological oceanography at the University of South Florida in Tampa. What ‘problem’ are we trying to solve with them?” he asked, the question is.
The SS United States Conservancy, which oversaw the vessel’s preservation, plans to establish a museum in Florida. This facility will house artifacts, including the ship’s two massive funnels, to ensure its legacy persists on land even as the hull begins its second life beneath the waves. While the keel will sit at 180 feet, the upper decks are expected to be accessible to recreational scuba divers, potentially sitting as shallow as 55 to 60 feet below the surface. According to besides plans to use the ship as a dive site, the SS United, Conservancy, a nonprofit that has been taking care of the ship and preserving its history, plans to eventually build a museum in Florida near dive embarkation sites where visitors can see artifacts from the vessel and explore its history.
