The continuous at sea deterrent (CASD) has provided the United Kingdom’s ultimate security insurance policy every day for the last 46 years.
Since 1992 the 4 boats of the Vanguard Class have maintained CASD, ensuring at all times 1 submarine was deployed. As the Vanguard submarines progress to the end of their lifespan, the UK is building the next generation of submarines to carry forward the vital role.
See the Dreadnought factsheet below to learn more.
Dreadnought submarine programme
Read the full National Security Strategy and Strategic Defence and Security Review 2015 here.
Published 28 October 2016