Here I present the A-Z guide for the UK’s nuclear deterrent, colloquially and erroneously called “Trident”.
A is for Atom. The Atom and the splitting on the atom is needed for two vital parts: First, to create the nuclear reaction for the reactor plant of the SSBN (the ballistic missile submarine that carries the missiles which carry the warheads) and second, the nuclear reaction that occurs in order to classify the warheads (and missiles) as nuclear-related weapons or if you like, weapons of mass destruction. A is also for Atomic Weapons Establishment, the facility in Aldermaston where UK nuclear warheads are built.
B is for Boat. A Submarine is a submarine, but the sailors and military people, call it a “boat”, NOT a ship. This is a common mistake in fiction novels and movies.
C is for Continuous-at-sea-Deterrence (CASD). CASD is not unique to the UK; The US, France Russia, China, and India, possibly Pakistan but not as yet for North Korea maintain SSBNs that patrol 24/7/365. One SSBN is on deterrence patrol while the three others are on training, maintenance or ready to deploy. This is because there are at maximum FOUR UK SSBNs and only four to maintain the “minimum credible deterrent.” C is also for Campaign for Nuclear Disarmament (CND), the full anti-nuclear weapons, anti-war, anti-military movement.
D is for Disarmament. The UK maintains its SSBNs but [supposedly] works to create multilateral disarmament. There have been a range of global nuclear disarmament talks such as the Strategic Arms Reduction Treaty(ies) (which the UK was not a partner of) and recently, the Vienna Conference on the Humanitarian Impact of Nuclear Weapons (not that such a topic is needed–everyone should know what a nuclear–fission or fusion–explosion would do). Multilateral Disarmament is just one means of reducing nuclear weapon stockpiles; there is unilateral disarmament, which some politicians advocate but others argue is not viable.
E is for Project E, a previous UK-US agreement to provide RAF bombers with nuclear weapons. One of the first UK-US nuclear agreements. Google it.
F is for the Future of the United Kingdom’s Nuclear Deterrent White Paper, published in 2006. It was one of the first post-Cold War UK government papers to advocate retaining an independent nuclear deterrent through to the 21st Century.
G is for the Guidance System. I’m not exactly sure if the UK version is the same as the US version which uses an “astro-inertial guidance” system. Does this mean the UK’s nuclear deterrent is 100% independent of the US and others? See “I”.
H is for Operation Hurricane, the very first UK atom bomb test.
I is for Independence. The UK is the only P5 member of the United Nations Security Council not to have its own delivery system. The Trident II (D5) UGM-133A missiles are American-made and shared through a “joint pool” with the US Navy. The warheads (see W and A) are supposedly UK-built but based on the US W76 design. With the missiles US-made, many claim the US “controls” the UK’s nuclear deterrent and a UK Prime Minister is unable to even set the launch without a US President’s approval. Opponents say no, the UK has control over its missile launches. See this old FOIA release for how the UK’s weapons are independent.
J is for I guess, Justification for the UK to have a nuclear deterrent.
K is for Kiloton, the measurement in which some nuclear yields (see Y) is measured. The best public evidence on how large the tonnage for UK-built warheads in at least 100 kilotons. The warheads could have a variable yield, who knows.
L is for Legality. It is one of the major arguments for and against the UK having nuclear weapons or a nuclear deterrent. L is also for the Letters of Last Resort, the dreaded letter a British Prime Minister has to write when entering office. It tells the SSBN commander what to do if the UK has been nuked and command and control is limited or lost.
M is for the Ministry of Defence, where the full super Top Secret nuclear deterrence and launch scenarios are held. M is also for Mutually Assured Destruction (MAD), which is what nuclear deterrence is, if you hold that view.
N is for the Non-Proliferation Treaty (NPT), which allows the UK to be a nuclear weapon state and this may be considered as legality for the UK to have a nuclear deterrent. It also may cause question about the UK’s status and role, since it called for nuclear disarmament. N is also for Northwood where CTF 345 personnel will receive the order from the PM (and his/her team, UK doesn’t officially say if it has a two-man rule at that level) for ballistic missile launch.
O is for Operational Control, again related to Independence. As stated in the FOIA states, UK and US are assigned for NATO security. This was supposedly stopped after 1992 (see this evidence and this.
P is for Polaris, the missile that came become Trident and the colloquially known system. P is also for PINDAR, The top secret bunker beneath Whitehall where the Prime Minister and the Chief of the Defence Staff would hide in during a nuclear crisis or attack and where they would issue the order for a UK strategic missile launch. Official name: Defence Crisis Management Centre (DCMC).
Q is for the Queen. Supposedly, according to Lord Guthrie, the Prime Minister of the day isn’t the final part of the fail-safe mechanism for nuclear missile launch. The Queen is the ultimate head of the armed forces and could stop a made PM from launching a nuclear missile or starting nuclear war.
R is for ROF Cardiff, a former nuclear weapons site. R is also for the Resolution-class submarine, which carried the Polaris missiles, see P.
S is for the 2010 Strategic Defence and Security Review, which pledged to reduce the UK nuclear force to “ewer than 160 to no more than 120” warheads. (See page 38 of the 2010 SDSR). This was officially concluded on 20 January 2015. “All Vanguard Class SSBNs on continuous at-sea deterrent patrol now carry 40 nuclear warheads and no more than eight operational missiles”. S is also for Submariner, the personnel who man the SSBNs and who may lose their jobs if the whole system is scrapped.
T is for, of course, Trident. This as I stated, is the missile, NOT The entire nuclear deterrent!!! You can read about the whole missile here.
U is for Ulysses, an UK nuclear warhead. U is also for the 1958 US–UK Mutual Defence Agreement.
V is for Vanguard, the class of SSBN submarine which carries the Trident D5 missiles which carry the UK-made nuclear warheads. V is also for the V-Bomber force, which once carried nuclear gravity bombs.
W is for Warhead. As stated in K (kilton), the warhead is the main part of the whole system that delivers the thermonuclear explosion. The submarine does not actually threaten targets; the Trident missile just guides the warhead to the target. W is also for the WE.177 nuclear gravity bomb, which the UK had until it was removed it 1992 (Royal Navy depth charge) and 1998 (Royal Air Force). This removal is often hailed by politicians as the UK’s major unilateral disarmament, while no other nuclear power followed suit.
X is for Weapon X, “an emergency capability ‘stop-gap’ laydown weapon intended to enable the Vulcan bomber force to operate at low-level for a few years, until the Royal Navy Polaris SLBM force became operational at the end of the 1960s.”
Y is for Yield, the nuclear yield.
Z is for Zodiac Mk3, another UK bomb.