SS Richard Montgomery: Masts

Jim Shannon Excerpts

Tuesday 21st April 2026 Commons Chamber

[Kevin McKenna (Sittingbourne and Sheppey) (Lab)]

Madam Deputy Speaker, I am really grateful to you and the House for this opportunity to discuss something that is of immense importance to residents in Sittingbourne, and especially on the Isle of Sheppey. It should also be of real concern to Members of this House, since the wreck that I am about to talk about, which lies at the mouth of the Thames estuary, also presents a danger to the physical wellbeing of the Houses of Parliament themselves.

For those who do not know, the Richard Montgomery, which lies just beneath the water at the mouth of the Thames, contains potentially the largest amount of explosives that could explode in peacetime anywhere in the world that has not been a nuclear test. This amount of explosives could, if they all went off at the same time, throw a plume of water 3,000 metres into the sky, setting off a tsunami that would obliterate vast swathes of the Kent and Essex coastline and shoot all the way up to London to flood all our colleagues who might be drinking on the Terrace of the House of Commons. This is obviously a real concern. I have to say that that was based on calculations done in the 1970s. More recent assessments of the wreck are not quite as dramatic. Nevertheless, there is a significant amount of munitions on the floor of the sea, just at the mouth of the most important river in our country, the River Thames.

The Richard Montgomery came over during the 1940s. It was full of munitions that were being given to Britain to fight the Nazis in the second world war. Tragically, it lost its anchorage and drifted on to a sandbank. When the tide fell, it broke the back of the ship, leaving it marooned in the mouth of the Thames. Since then, it has been a major landmark that is used by ships to navigate their way up and down the River Thames and a warning to people not to get too close to the explosives. It can be seen from Sheerness, where it is only about a mile and a half out to sea. People who have grown up on Sheppey know this story. It does not just connect them to the second world war and the support we got from our American allies at that time; it also has a powerful story, because of the threat of the explosives, as people grow up around it and feel that they might be in danger of a catastrophic explosion occurring.

In recent years, the wreck, which is a steel vessel, has been gradually deteriorating and corroding. Concerns have been raised about what would happen if the vessel should disintegrate completely and scatter the explosives across the sea or, even worse, if any of them were to be triggered. I have spoken to explosives experts and bomb disposal experts in the Royal Navy and the general feeling is that, when vessels such as this were set to sea, all the explosives and munitions on board were made safe. The detonators would have been kept separate from the high explosive charges and the risk is comparatively low, but we cannot say that there is zero risk.

One of the concerns that has been raised in recent years is that, as the three masts that stand proud of the water erode and rust away, they could fall on the wreck and destroy what is left of the Richard Montgomery, either triggering an explosion or scattering the explosives. Over several years, the Government and the previous Government looked at what could be done to make it as safe as possible, and the decision was made to remove the masts. The Government have finally now signed a contract with the removal company that will dismantle the masts. This landmark will be lost forever to people from Sheerness, and the emotion and those stories are at risk of being lost locally.

[Jim Shannon (Strangford) (DUP)]

I commend the hon. Gentleman for bringing forward this debate. He has illustrated the issue and the concerns over the explosives, although the second and up-to-date assessment seemed to indicate that maybe the threat is not the same. I want to ask him about marine and maritime history and the three masts. Does he agree that the ultimate goal is to protect local maritime history by creating a lasting public display for locals and tourists alike? Does he not further agree that our maritime history—my constituency of Strangford has incredible maritime history—should be promoted in schools across the United Kingdom and that schools should be encouraged to visit these masts, as we do in Northern Ireland with the Titanic museum in Belfast, to gain a better understanding of our strong history? He should be congratulated on bringing this issue forward. None of us—not me—would have known about it but for his knowledge.

[Madam Deputy Speaker (Ms Nusrat Ghani)]

I congratulate the hon. Member for creating a link back to the topic.