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Spain Navantia
S-80 Plus
Spanish Navy diesel-electric attack submarine built by Navantia, fitted with a bio-ethanol fuel-cell air-independent propulsion system for extended submerged endurance. The program overcame a well-publicized buoyancy design flaw before entering service, replacing Spain's aging French-designed Agosta-class boats.
In service since 2023 · 1 operator countries
Compiled from public sources ·primary reference ↗ ·last verified 2026-07-02
300
m depth
19
kn
8,000
nmi
2,965
t
32
crew
💲 ≈ $1,000,000,000, Approximate build cost per boat
Procurement snapshot
Availability & export
National export licensing
Subject to Spain export-control approval; verify eligibility with the manufacturer.
Channel: Direct commercial / G2G
Fielded & proven
Limited · 1 operator
In service since 2023. Status: active · ~1 built.
Lifecycle cost (est.)
$2.5B – $3.5B
Acquisition is only ~30% of lifecycle cost, operating & support dominate over ~30 yrs. Rough 2.5–3.5× the unit price.
Interoperability
No standardised NATO calibre / datalink detected in public specs.
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 S-80 Plus can carry. Linked items have a full spec page.
Full specifications
Firepower
Armament, payload and guidance.
- Torpedo tubes
Number of torpedo tubes (submarines and some surface ships).
- 6 Stronger than 53% of submarines
Physical
Dimensions, weight and crew.
- Length
Overall length including gun/probe where applicable.
- 80.8 m
Program
Cost, production scale and operators.
- Unit cost
Approximate flyaway/unit cost where public. Defense pricing varies hugely by contract, offsets and configuration. Lower is cheaper.
- $1,000,000,000 Stronger than 50% of submarines
- Units built
Total production run. Higher means proven manufacturing, mature logistics and spares availability.
- 1 Bottom 9% 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 Navantia and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-02.
Compare with rivals
See how it stacks up
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Rubin Design Bureau Borei-class Frequently asked questions
What is the Navantia S-80 Plus used for? +
The Navantia S-80 Plus is a submarine typically used for anti ship, isr.
How many countries operate the Navantia S-80 Plus? +
The Navantia S-80 Plus is operated by 1 countries.
How much does the Navantia S-80 Plus cost? +
The Navantia S-80 Plus has an approximate unit cost of 1,000,000,000 USD. Defense pricing varies by contract, offsets and configuration, treat this as directional.
