Submarines: Iron and Steel

Ministry of Defence written question – answered on 7th June 2021.

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Photo of John Healey John Healey Shadow Secretary of State for Defence

To ask the Secretary of State for Defence, what the location is of the site used to produce the pressure hull steel used in the production of the Trafalgar class and Vangard class submarines.

Photo of Jeremy Quin Jeremy Quin The Minister of State, Ministry of Defence

The pressure hull steel used in the production of the Vanguard Class of submarine was predominantly sourced from the British Steel Corporation's Dalzell plant in Motherwell, Scotland. Owing to the time that has elapsed since the procurement of steel for the Trafalgar Class submarines, reliable information on the source is not readily available. However, it is likely that the pressure hull steel was produced by UK manufacturers.

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