Submarine Capabilities Comparison

Aug 3, 2025

Overview

This lecture analyzes the U.S. and Russian submarine arsenals and their nuclear capabilities, highlighting structural differences and the implications for military balance.

Background of the U.S.-Russia Submarine Dispute

  • Tension arose after President Trump moved two American nuclear-powered attack submarines near Russia.
  • The situation involves both political signaling and military capability.

Comparing Submarine Fleets: US vs. Russia

  • The U.S. has 64 active submarines, Russia has 58.
  • Numbers alone are misleading; submarine types and capabilities differ greatly.
  • U.S. submarines are categorized mainly as SSBNs (ballistic missile submarines) and SSNs (nuclear-powered attack submarines).
  • U.S. fleet: 14 SSBNs and 50 SSNs.
  • Russian fleet: 11 SSBNs, 17 nuclear-powered cruise missile submarines, and 21 diesel-electric attack submarines.
  • Russian diesel-electric submarines lack the range and endurance of nuclear-powered ones.

Ballistic Missile Submarine Comparison

  • U.S.: 14 Ohio-class SSBNs, each carrying up to 20 Trident II D5 missiles (with multiple nuclear warheads).
  • Russia: Mainly Borei-class SSBNs (11), each carrying 16 Bulava intercontinental ballistic missiles.
  • The two countries' submarines differ in size, missile capacity, and technological advancement.

Attack Submarine Comparison

  • U.S.: 50 nuclear-powered attack submarines, including Virginia, Seawolf, and Los Angeles classes.
  • Russia: 17 nuclear-powered attack submarines, 9 guided-missile (SSGN), and 21 diesel-electric attack submarines.
  • U.S. attack submarines are generally more advanced and numerous.

Broader Nuclear Arsenal Context

  • Submarines represent only part of overall nuclear capability.
  • Russia has more nuclear missiles in total when considering all delivery systems (not just submarines).

Key Terms & Definitions

  • SSBN — Ballistic missile submarine carrying nuclear missiles.
  • SSN — Nuclear-powered attack submarine.
  • SSGN — Nuclear-powered guided missile submarine.
  • Ohio Class — U.S. class of SSBNs.
  • Borei Class — Russian class of SSBNs.
  • Trident II D5 — U.S. submarine-launched ballistic missile.
  • Bulava — Russian submarine-launched ballistic missile.

Action Items / Next Steps

  • Review the differences between SSBN, SSN, and SSGN classes.
  • Research the strategic importance of nuclear-powered vs. diesel-electric submarines.