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Submarine

United States

General Dynamics Electric Boat

Ohio-class Submarine

The U.S. Navy's ballistic-missile and guided-missile submarine class, forming the sea-based leg of the nuclear triad with 14 SSBN boomers, plus four converted to conventional-strike SSGN carrying Tomahawk missiles.

In service since 1981 · 1 operator countries

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-02

240

m depth

18,750

155

crew

Procurement snapshot

Availability & export

US ITAR-controlled

Export needs U.S. State Dept (DDTC) approval; end-use & re-transfer restrictions apply.

Channel: Foreign Military Sales (FMS) or Direct Commercial Sale

Fielded & proven

Limited · 1 operator

In service since 1981. Status: active · ~18 built.

Lifecycle cost (est.)

No public unit price to model from. Why so few systems publish one →

Interoperability

Mk 41 VLS-class

Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.

Compatible munitions & weapons

Publicly reported weapons the Ohio-class Submarine can carry. Linked items have a full spec page.

Trident II D5 SLBM Tomahawk (SSGN variant) Mk 48 torpedo

Full specifications

Firepower

Armament, payload and guidance.

Firepower specifications
VLS cells Vertical-launch missile cells on a warship, a proxy for magazine depth. Higher means more missiles before rearming.	24 Top 4% of submarines
Torpedo tubes Number of torpedo tubes (submarines and some surface ships).	4 Stronger than 15% of submarines

Physical

Dimensions, weight and crew.

Physical specifications
Length Overall length including gun/probe where applicable.	170.7 m

Naval

Displacement, speed, endurance and diving depth.

Naval specifications
Displacement Standard displacement in tonnes, the ship’s size class. Larger hulls carry more but cost more and are less agile.	18,750 t
Max speed Top speed in knots (surfaced, for submarines). Higher aids positioning and screening.	25 kn Stronger than 80% of submarines
Submerged speed Maximum speed while submerged (submarines). Higher is faster underwater.	25 kn Stronger than 73% of submarines
Test depth Maximum rated diving depth (submarines). Deeper is harder to detect and engage. Actual crush depth is classified.	240 m Stronger than 12% of submarines
Complement Crew size. Fewer eases manning cost; more may indicate a larger, more capable platform.	155
Propulsion plant Machinery type, nuclear reactor, gas turbine (COGAG), CODAG, diesel-electric, AIP.	1x S8G nuclear reactor

Program

Cost, production scale and operators.

Program specifications
Units built Total production run. Higher means proven manufacturing, mature logistics and spares availability.	18 Stronger than 80% of submarines
Operator countries Number of countries operating the system. More operators means broader support ecosystem.	1 Stronger than 39% of submarines

Specifications compiled from public General Dynamics Electric Boat and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-02.

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