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UK Removes Masts from WWII Ship with 1,400 Tonnes of Explosives

UK Removes Masts from WWII Ship with 1,400 Tonnes of Explosives

First seen 3 Nov 2026, 23:16 UTC • •
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ThreatCluster AI
ThreatCluster •November 3, 2026 at 23:16 UTC
  • •The masts of SS Richard Montgomery were removed to mitigate risks to the deteriorating wreck.
  • •1,400 tonnes of explosives remain at the site, posing a potential risk of detonation.
  • •The project was completed ahead of schedule and involved multiple agencies.

The UK government has successfully removed the three masts from the SS Richard Montgomery, a WWII cargo ship that sank in the Thames Estuary in 1944 with approximately 1,400 tonnes of explosives on board. The removal was prompted by concerns that the masts were putting undue strain on the deteriorating wreck, which could lead to an explosion. While the masts have been removed and transferred to the Historic Dockyard Chatham for preservation, the explosives remain at the site, monitored by port authorities. Experts have warned that the explosives could detonate if seawater reaches the fuses, a risk known to the government since at least 1967. The project was completed ahead of schedule and below budget, involving collaboration between various agencies and experts. The wreck is currently protected by a 500-meter exclusion zone.

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Timeline

2026-11-03
Masts removed from SS Richard Montgomery
The UK government announced the successful removal of the three masts from the WWII cargo ship to reduce risks associated with its deteriorating structure.
Gizmodo
2026-11-03
Completion of mast removal project
The Department for Transport confirmed the completion of the mast removal project, which was carried out to ensure the long-term safety of the wreck site.
www.gov.uk
2026-11-03
Ongoing monitoring of wreck site
Port authorities continue to monitor the SS Richard Montgomery wreck, which is protected by a 500-meter exclusion zone due to the explosives on board.
www.bbc.com

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Common questions

What risks are associated with the SS Richard Montgomery?
The wreck contains 1,400 tonnes of explosives, which could detonate if seawater reaches the fuses.
How is the wreck being monitored?
The wreck is monitored 24/7 by port authorities and is protected by a 500-meter exclusion zone.
What was the outcome of the mast removal project?
The project was completed successfully, with all three masts removed to reduce strain on the wreck.