Ohio class
Fuel enrichment
~93% U-235
HEU
Ohio class is a nuclear-powered submarine operated by United States Navy, powered by S8G of about 220 MWt. Operating.
The US ballistic missile submarine fleet, being replaced by the Columbia class from the 2030s.
Propulsion
| Reactor | S8G |
|---|---|
| Reactors per vessel | 1 |
| Thermal output | 220MWt |
| Fuel enrichment | ~93% U-235HEU |
| Refuelling | One mid-life refuelling at about 25 years |
Vessel
| Category | submarine |
|---|---|
| Role | SSBN |
| Operator | United States Navy |
| Country | United States |
| Vessels in class | not stated |
| In service from | 1981 |
| Status | Operating |
Other submarines
| Class | Enrichment | Status |
|---|---|---|
| AUKUS submarines | HEU | Planned |
| Alfa class | HEU | Retired |
| Arihant class | HEU | Operating |
| Astute class | HEU | Operating |
| Borei class | HALEU | Operating |
| Dreadnought class | HEU | Under construction |
| Suffren class (Barracuda) | LEU | Operating |
| Type 093 and 094 (Shang and Jin) | LEU | Operating |
| USS Nautilus | HEU | Retired |
| Virginia class | HEU | Operating |
| Yasen class | HALEU | Operating |
Sources
- World Nuclear Association, Nuclear-Powered Ships · retrieved 2026-09-07