From Citizendium, the Citizens' Compendium
- See also changes related to Vanguard-class, or pages that link to Vanguard-class or to this page or whose text .
- Royal Navy : By long naval tradition, when there is no qualifier but "Royal", the navy being discussed is that of the United Kingdom.
- Ballistic missile submarine : A submarine armed with submarine-launched ballistic missiles
- United Kingdom nuclear weapons : Nuclear weapons designed, built and deployed by the United Kingdom
- UGM-133 Trident D5 : Current generation of submarine-launched ballistic missile on U.S. and U.K. submarines; extremely accurate, long-range and equipped with multiple independently targeted reentry vehicles banned from land-based intercontinental ballistic missiles