Masts Removed from Sunken Ship to Reduce UXO Hazard
Sheerness, United Kingdom Engineers have successfully dismantled and removed all three masts from the sunken SS Richard Montgomery, significantly mitigating the risk of a catastrophic UXO detonation in the Thames Estuary. The WWII US cargo ship sank in 1944 while carrying approximately 3 million pounds of munitions, with its submerged holds containing an estimated 300 2,000-pound blockbuster bombs alongside more than 2,000 cluster bombs.
The complex structural removal was initiated out of concern that the degrading masts could collapse directly into the UXO payload. For decades, experts have warned that a sympathetic detonation of the wreck could produce a localized tsunami, launch debris up to two miles into the air, and level the nearby coastal community.
Completed ahead of schedule and under its $12 million USD budget, the preventive engineering project successfully relieved the structural load on the decaying hull without disturbing the munitions. The salvaged masts have since been relocated to the Historic Dockyard Chatham museum.
To ensure ongoing safety, the wreck is strictly protected by a long-standing maritime exclusion zone to prevent ships from entering the area.








