Royal Navy Resolution Class Submarines: A Comprehensive Guide

Introduction

The Resolution class submarines were the Royal Navy’s first ballistic missile submarines, forming the backbone of the United Kingdom’s strategic nuclear deterrent from the late 1960s through to the 1990s. Built in response to growing Cold War tensions and designed to carry Polaris nuclear missiles, these four submarines operated continuously for nearly 30 years, maintaining the UK’s policy of continuous at-sea deterrence.

Origins and Design Development

In the early 1960s, the British government made the decision to shift the national nuclear deterrent from the RAF’s V-bombers to a submarine-launched missile platform. An agreement with the United States provided access to the Polaris missile system, which Britain would integrate into its own class of purpose-built nuclear submarines.

The Deal Britain Had to Make

That reads like a considered strategic choice, and it was very nearly a disaster. Britain had staked her entire nuclear deterrent on Skybolt, an American air-launched ballistic missile that would have let the V-bombers stand off well outside Soviet air defences and fire from a safe distance. Without it the V-force had a future measured in a few years, because Soviet surface-to-air missiles were making the manned bomber over hostile territory an increasingly poor bet.

On 22 December 1962 the Americans cancelled Skybolt. It was their programme, it was over budget and behind schedule, and they had no particular need for it because they had Polaris and Minuteman. Britain had no such alternative and had spent years arranging not to need one.

What makes it worse is what Britain had already paid for Skybolt. At Camp David in March 1960 Macmillan and Eisenhower agreed that the Americans would sell Britain a hundred and forty-four Skybolts to carry British warheads, and in return the United States Navy got a submarine base at Holy Loch on the Clyde, thirty miles from Glasgow, which was politically contentious in Scotland from the day it was announced. Britain handed over the base, the Americans then cancelled the missile, and the base stayed American for the next three decades.

Harold Macmillan met President Kennedy at Nassau within days of the cancellation and came away with Polaris instead. It is usually described as a triumph of personal diplomacy and there was some of that in it, though a man arriving with nothing to trade and a domestic political catastrophe behind him was not negotiating from strength.

So the Resolution class exists because of a cancelled aircraft weapon and a fortnight of urgent negotiation, and the independence of the British deterrent has been argued about ever since on exactly those grounds: the missiles are American, the boats and the warheads are British, and the decision to fire is British alone.

The design of the Resolution class was based on the Valiant class attack submarines, extended and modified to carry a missile compartment and improved communications and command systems.

Each submarine was equipped with 16 Polaris A3 missiles, later upgraded to A3TK standard with British-designed Chevaline re-entry vehicles, improving penetration of Soviet defences. The vessels were constructed by Vickers Shipbuilding and Engineering Ltd in Barrow and Cammell Laird in Birkenhead.

Chevaline deserves more than a clause, because it is one of the strangest episodes in British defence history. By the 1970s the Soviet Union had ringed Moscow with anti-ballistic missile defences, and the calculation behind the deterrent, which rested on being able to destroy the Soviet capital, no longer obviously worked. Chevaline was the answer: a British-built front end for the Polaris missile carrying penetration aids and decoys designed to swamp those defences.

It cost somewhere around a thousand million pounds, at 1970s prices, and it was concealed from Parliament by four consecutive governments of both parties. Its existence was not disclosed until 24 January 1980, when the Defence Secretary Francis Pym told the House about a project that had been running for a decade and had already spent most of the money.

The Public Accounts Committee took a dim view of it in 1982. Their complaint was not that the work should not have been done, it was that the costs had never been disclosed and that nothing in the system required them to be. One Defence Secretary is on the record describing the cost as having gone bananas.

It is worth holding on to when reading about the deterrent, because the technical description of an improved re-entry vehicle conceals a genuine constitutional argument about whether Parliament can be told nothing at all about how a billion pounds is spent.

Submarines of the Class

Four Resolution class submarines were built:

HMS Resolution (S22)

HMS Repulse (S23)

HMS Renown (S26)

HMS Revenge (S27)

Each submarine was assigned to a rigorous operational cycle, including refit, training, patrol, and rest. The goal was to ensure that at least one boat was always on patrol at sea, maintaining continuous deterrent capability.

The two-crew arrangement is the mechanism that makes that possible and it is worth setting out. Each boat had a Port crew and a Starboard crew of about a hundred and forty men each, and they took her alternately. One crew went to sea for eight to twelve weeks while the other trained ashore, took leave and went home to their families. When the boat came in, they swapped over inside a few days and she went out again.

The point is that the submarine is the expensive thing, not the men. A boat that spends half her life alongside waiting for a rested crew is a boat delivering half the deterrent she cost. Two crews roughly double the time each hull spends at sea, and four boats on that cycle can keep one at sea permanently while another is in deep refit, a third works up and a fourth stands by.

Four is the minimum number that works, which is the reason the answer has always been four, and it is why the same argument comes back every time the class is replaced.

Design and Technical Features

Displacement: 7,600 tonnes surfaced, 8,400 tonnes submerged

Length: 130 metres

Propulsion: 1 × Rolls-Royce pressurised water reactor, 2 steam turbines, single shaft

Speed: Over 25 knots submerged

Test depth: 300+ metres

Armament: 16 × Polaris A3 or A3TK ballistic missiles 6 × 21-inch torpedo tubes (Tigerfish torpedoes)

Sensors: Sonar and radar tailored for strategic patrol and situational awareness

Crew: Approximately 140 officers and ratings

Each submarine carried two full crews (Port and Starboard) to maximise time at sea and reduce fatigue among personnel.

Service and Operations

From 1968 onwards, the Resolution class submarines carried out unbroken nuclear deterrent patrols, primarily in the North Atlantic. These patrols were highly classified, with boats operating in strict radio silence, tracking any adversaries while remaining undetectable themselves.

The first deterrent patrol was carried out by HMS Resolution in June 1968.

And the last was made by HMS Repulse, which is worth recording alongside the first. She came home from her sixtieth patrol in May 1996, and on 28 August that year she was decommissioned at Faslane in the presence of the Prime Minister, John Major, and the Defence Secretary, ending twenty-eight years of British Polaris.

Between HMS Resolution going to sea in June 1968 and Repulse coming home in 1996, there was never a day on which a British ballistic missile submarine was not on patrol somewhere in the North Atlantic. That is the achievement the class is remembered for, and it required four hulls, eight crews and an unbroken sequence of engineering and scheduling decisions across nearly three decades.

During the Cold War, patrols were typically 60–90 days long.

What that meant day to day is worth describing, because it is unlike any other job in the armed forces. The boat leaves the Clyde, dives, and is not seen again for two or three months. She does not surface. She does not transmit, because transmitting can be direction-found and the entire value of the deterrent lies in nobody knowing where she is. She receives, on a trailing wire aerial, and says nothing back.

That silence has a human cost that the Navy has always taken seriously and never entirely solved. Families could send a very short message, a few dozen words vetted before transmission and containing nothing that could upset a man who cannot do anything about it. Nobody aboard could reply. Men have come home from patrol to births, deaths and the ends of marriages.

And the boat is, in the most literal sense, doing nothing. A deterrent patrol succeeds by being uneventful. HMS Revenge is remembered for one of the extreme examples of what that endurance involved, and HMS Renown spent her whole career on the same silent rotation.

Missiles were never used in combat, but the presence of the submarines provided the cornerstone of British strategic defence.

The Polaris missiles were upgraded in the 1980s under the Chevaline programme, extending their life and countering Soviet anti-ballistic missile systems. However, by the 1990s, the Polaris system was increasingly outdated.

The class was gradually retired as the Vanguard class submarines entered service, carrying the more advanced Trident D5 missile system.

The handover was managed so that the run was never broken. HMS Vanguard took over the deterrent while Polaris boats were still patrolling, and HMS Victorious and her sisters have carried it ever since. The counter has simply kept running through the change of class, the change of missile and the end of the Soviet Union.

Trident is a considerably longer-ranged weapon, which changed the geography of the job. A Polaris boat had to get within about two and a half thousand miles of her targets, which meant going a good way north and east into water the Soviet Navy was actively hunting. A Trident boat can cover the same targets from a great deal further away, which makes her far harder to find. The Resolution crews did the same job in a smaller and more dangerous ocean.

Summary – At a Glance

Conclusion

The Resolution class submarines ensured that the United Kingdom maintained an independent, secure, and credible nuclear deterrent throughout the Cold War. Operating silently beneath the waves, they represented a formidable guarantee of national security.

Although replaced by the Vanguard class in the 1990s, their legacy endures as the first vessels to deliver continuous at-sea deterrence, a concept that continues to this day.

All four of them are still with us, which is not widely known. Resolution, Repulse, Renown and Revenge were defuelled and laid up afloat at Rosyth, and that is where they remain, tied up, sealed, inspected and maintained, waiting for a dismantling programme that has been in preparation for decades.

Resolution has now been laid up for longer than she was ever in commission. She served for somewhat over a quarter of a century and has been waiting rather longer than that, and the same is true of her sisters. It is the unglamorous end of nuclear propulsion and it is a genuine national liability rather than a piece of naval trivia: a reactor compartment cannot be sold for scrap and cannot be left unattended.

None of which alters what they did. Four submarines, built in about six years by two yards, kept a nuclear-armed boat at sea continuously for twenty-eight years without a single gap, and not one of the missiles was ever fired at anybody. Whatever anybody thinks of the policy, that is a remarkable piece of engineering and organisation.