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Submarines1981–present
SSBN / SSGN (hull design SCB-304)
Ohio-class submarine is a sSBN / SSGN (hull design SCB-304). The cited manufacturer or builder is General Dynamics Electric Boat.
United StatesOhio-class submarine
PH1 James Preston · Public domain · Resized · Public domain · Source ↗ · ModifiedOhio class
General Dynamics Electric Boat
United States Navy
Benjamin Franklin class
Columbia class (ballistic missile submarine variant) Virginia class (cruise missile submarine variant)
$2 billion (late 1990s) ($3.62 billion in 2024 dollars )
1976–1997
1981–present
24
18
6
18
SSBN / SSGN (hull design SCB-304)
16,764 tonnes (16,499 long tons) surfaced 18,750 tonnes (18,450 long tons) submerged
560 ft (170 m)
42 ft (13 m)
35.5 ft (10.8 m) maximum
1× S8G PWR nuclear reactor 2× geared turbines ; 35,000 shp (26 MW) 1x Fairbanks Morse auxiliary diesel 1× 325 hp (242 kW) auxiliary motor 1 shaft with seven-bladed screw
12 knots (22 km/h; 14 mph) surfaced 20 knots (37 km/h; 23 mph) submerged (official) 25 knots (46 km/h; 29 mph) submerged (reported)
Limited only by food supplies
+800 ft (240 m)
15 officers, 140 enlisted
BQQ-6 passive bow-mounted array (which includes BQS-13 fire control array) BQR-19 navigation TB-16 or BQR-23 towed array BQR-25 conformal array AN/BPS-15J
4 × 21 inch (533 mm) Mark 48 torpedo tubes (Forward Compartment 4th level)
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Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 170 m | Wikipedia contributors | superseded |
Ohio-class submarine equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
United StatesUS Navy exact named equipment holdings of Ohio (opcon US STRATCOM), Ohio (mod). Active, operational-reserve and training units excluding equipment in store; November 2025 IISS assessment. Named service only, not a national or parent-force total or combat-readiness measure. Source role(s): SUBMARINES / SSBN, SUBMARINES / SSGN. No heading aggregate, carried armament, crew, payload, factory production or future order count inherited. Family total is the sum of the separately printed nonoverlapping exact model components, each explicitly declared by its own source; no parent or sibling variant identity inferred. The leading printed inventory count is retained; separately stated extra reserve, nonoperational or repair quantities inside parentheses are not added to it and remain verbatim in the excerpt. Source parentheses retain employment, lease, reporting designation, alternate model, or included-subset scopes exactly. Own fetched primary and alternate/model identity declarations are retained. Numbers inside an included subset are part of the printed count and are never added again; no sibling or parent specification is copied.