Kirov-class

🇷🇺Russian Federation
1980 – Present
Spotlight

The world's largest surface combatants — Cold War nuclear battlecruisers, one hull left

Russia Has Just Reintroduced an Enormous Nuclear Battlecruiser (Megaprojects)

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Overview
Kirov-class
The Kirov-class is a class of nuclear-powered guided-missile heavy cruisers of the Soviet and Russian Navy, known for being the largest and heaviest surface combatant warships in operation.
Specifications

General

Crew760
Beam M28.5 m
Length M252 m
Propulsion2-shaft CONAS, 2× KN-3 nuclear marine propulsion with 2× GT3A-688 steam turbines
Speed Knots32 knots
Radar SystemTop Pair
Main Missiles20 P-700 Granit (SS-N-19 Shipwreck) missiles, 12 S-300F launchers with 96 missiles, 2 Osa-MA with 40 missiles
Displacement Tons28,000 tons

Other

RangeEffectively unlimited on nuclear power; ~1,000 nm at 17 kn on auxiliary steam (est.)
Draft M9.1 m
Aviation3× Ka-27 series helicopters, below-deck hangar
Main Gun1× twin AK-130 130 mm dual-purpose gun (later ships)
Ships In Class4 completed (Kirov, Frunze, Kalinin, Pyotr Velikiy); 1 active after refit
Vls After Refit~80 UKSK 3S14 cells for Kalibr/Oniks/Zircon on Admiral Nakhimov, replacing 20 P-700 Granit (reported)
Power Output Shp~140,000 shp combined (Soviet-era figure)
Total Missile Cells Refit~176 vertical launch cells incl. air-defence silos on Admiral Nakhimov (reported)
Latest Developments
Aug 21, 2026strong signal
Russia Spent 27 Years and $5,000,000,000 Rebuilding Just 1 Kirov-Class Battlecruiser. She Might End Up As Obsolete as An Old Battleship

the effort to bring back a single ship of that same Kirov-class has consumed twenty-seven years

Jul 28, 2026strong signal
Russia’s Admiral Nakhimov Nuclear Kirov-Class Battlecrusier Is the Most Heavily Armed Warship on Earth — the Trump-Class Battleship Can’t Match It

Russia expects the nuclear-powered battlecruiser Admiral Nakhimov to enter service before the end of 2026.

Jul 27, 2026strong signal
Dozens of Navy Submarines are Nuclear Powered. The Real Military Mystery Is Why Surface Warships Don’t Go ‘Atomic’

Russia has spent decades restoring the Kirov-class Admiral Nakhimov

Jul 22, 2026strong signal
Ukraine Has Declared War on Russia’s Shadow Fleet and Smashed 13 Vessels in the Last Two Days

Entity 'Kirov-Class Battlecruiser' mentioned in report

Featured Coverage
Research Notes

Soviet nuclear-powered missile cruiser built as a capital surface combatant

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The Kirov class, Project 1144 Orlan, was built to give the Soviet Navy a very large nuclear-powered missile cruiser for high-end ocean operations.

The Kirov class, Soviet Project 1144 Orlan, occupies an unusual place in modern naval history. It is often called a battlecruiser in Western writing because of its size and heavy missile armament, while Russian terminology treats it as a heavy nuclear-powered missile cruiser.

The class reflected late Soviet ambitions for a blue-water navy able to threaten carrier groups, protect distant formations, and demonstrate great-power naval reach. U.S. government Cold War material described Kirov as a symbol of larger Soviet warship classes and emphasized its status as a nuclear-powered surface combatant.

For HiWars, this page should explain the classification problem rather than hide it. The ship is not a battleship in the gun-armored sense, but it is also much larger and more heavily armed than most modern cruisers or destroyers.

Missile-heavy design and nuclear endurance

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The class combines nuclear propulsion with a large anti-ship, air-defense, anti-submarine, and command weapons fit.

The Kirov-class concept centered on long endurance and a very large missile battery. Nuclear propulsion gave the ship a different endurance profile from conventionally powered surface combatants, while the weapons fit was intended to support anti-surface, air-defense, anti-submarine, and command roles.

This design logic came from a Soviet approach to naval warfare that emphasized long-range missiles and layered defenses against stronger NATO carrier forces. The ship's size allowed a broad weapons and sensor fit, but also made the class expensive, complex, and difficult to sustain.

Public descriptions of exact modernization fits vary, especially for Admiral Nakhimov and Pyotr Veliky. HiWars should avoid treating planned upgrade configurations as operational facts until the ship status and equipment are confirmed by reliable current sources.

Prestige asset, maintenance burden, and uncertain future

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Kirov-class value is shaped as much by sustainment and modernization status as by original design power.

The Kirov class is a prestige asset for the Russian Navy, but prestige does not automatically equal available combat power. A ship of this size requires specialized maintenance, crew depth, nuclear engineering support, weapons support, and long shipyard periods.

The class has been associated with modernization plans and changing availability. That makes current status central: whether a hull is active, laid up, refitting, scrapped, or planned for modernization changes the meaning of the database record.

A useful HiWars page should separate the class design from each hull's condition. The original class shows Soviet naval ambition; the modern record shows how difficult it is to keep very large nuclear surface combatants operational after the industrial and financial base that created them has changed.

Key parameters at a glance

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Soviet-era figures are well documented; post-refit armament figures for Admiral Nakhimov are reported, not officially confirmed.

Role
Nuclear-powered guided-missile heavy cruiser (Project 1144 Orlan)
Displacement
~28,000t full load
Length
252m
Draft
9.1m
Propulsion
CONAS: 2× KN-3 reactors + oil-fired superheat boilers, 2 shafts
Speed
32kn
Original main battery
20× P-700 Granit (SS-N-19 Shipwreck) anti-ship missiles
Nakhimov refit battery
~80 UKSK cells for Kalibr / Oniks / Zircon (reported)
Crew
~710–760
Status
1 of 4 hulls active: Admiral Nakhimov on trials; Pyotr Velikiy slated for retirement

Program milestones

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Publicly reported milestones for Project 1144 and the Admiral Nakhimov refit.

1974-03Kirov laid down

Lead ship of Project 1144 Orlan laid down at the Baltic Shipyard, Leningrad — the largest surface combatants built since World War II.

1980-12Kirov commissioned

Lead ship enters Soviet Navy service, built around 20 P-700 Granit anti-ship missiles and the navalized S-300F area-defence system.

1988-12Kalinin (later Admiral Nakhimov) commissioned

Third ship of the class joins the Northern Fleet; renamed Admiral Nakhimov in 1992.

1998-04Pyotr Velikiy commissioned

Fourth and final ship enters service after a protracted post-Soviet build, becoming the Northern Fleet flagship.

1999Nakhimov laid up at Sevmash

Admiral Nakhimov enters Sevmash in Severodvinsk for overhaul; the first two ships (Kirov/Admiral Ushakov, Frunze/Admiral Lazarev) are progressively withdrawn and later scrapped.

2013-12Nakhimov modernization contract

Formal refit begins: 20 Granit tubes replaced by ~80 UKSK VLS cells for Kalibr, Oniks and Zircon, plus renewed air defences (reported cost near USD 5 billion).

2025-01Pyotr Velikiy retirement reported

Russian media report the decision to forgo Pyotr Velikiy's modernization and decommission the ship once Nakhimov returns to service.

2025-08Admiral Nakhimov begins sea trials

The rebuilt cruiser puts to sea from Severodvinsk for factory trials after roughly 26 years alongside, entering the final trial phase in mid-2026.

Strategic significance

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The Kirov class was the Soviet Navy's answer to the US carrier battle group: a nuclear-powered strike cruiser combining long-range P-700 Granit anti-ship missiles, the navalized S-300F air-defence system and layered anti-submarine armament in a 28,000-ton hull. No Western navy fielded a comparable surface combatant, and the class is widely credited with prompting the US reactivation of the Iowa-class battleships in the 1980s. In pure tonnage and magazine depth, the ships remain the largest and most heavily armed non-carrier surface combatants ever put to sea.

The class's post-Soviet history illustrates the cost of that ambition. Two of the four hulls were retired early and scrapped, while Admiral Nakhimov spent roughly a quarter century at Sevmash in a refit reported at close to USD 5 billion — replacing its 20 Granit tubes with around 80 UKSK vertical-launch cells for Kalibr, Oniks and Zircon missiles and, by some reports, giving it more than 170 missile cells overall. With the January 2025 decision to retire Pyotr Velikiy rather than fund a similar overhaul, the rebuilt Nakhimov is set to be the sole survivor of the class.

If the reported rearmament is confirmed in service, Admiral Nakhimov would carry one of the deepest cruise- and hypersonic-missile magazines of any surface ship, giving the Northern Fleet a high-endurance nuclear-powered strike and air-defence node for Arctic and blue-water operations. Analysts nonetheless question the value proposition: a single, highly visible capital ship absorbs escort, manning and maintenance resources that could equip several Kalibr-armed frigates or submarines, and its survivability against modern anti-ship weapons — a lesson underscored by the loss of the cruiser Moskva in 2022 — remains unproven.

Videos

Admiral Nakhimov Begins Sea Trials After Decades of Modernization (TECHNO THUNDER)

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Russia Unleashes 28,000-Ton Kirov Nuclear Cruiser Against U.S. Zumwalt Stealth Destroyer (Times Of India)

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The Red Godzilla: Kirov-class Nuclear-Powered Cruisers (Bilibili)

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Variants (1)
Service YearName
1980 –Kirov (Project 1144 Orlan)
Sources & References
UNITS
NameCountryStatusService YearDescription
RFS Pyotr Velikiy (099)
🇷🇺Russian Federation
ACTIVE1998 – PresentLast active Kirov-class battlecruiser
RFS Kalinin / Admiral Nakhimov
🇷🇺Russian Federation
RESERVE1988 – PresentKirov-class battlecruiser, undergoing major refit
RFS Frunze / Admiral Lazarev
🇷🇺Russian Federation
DECOMMISSIONED1984 – 1999Kirov-class battlecruiser
RFS Kirov / Admiral Ushakov
🇷🇺Russian Federation
DECOMMISSIONED1980 – 2004Lead Kirov-class battlecruiser
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