Hamina-class

A Finnish fast attack craft built for anti-surface and mine-laying operations in the Baltic Sea's archipelago waters, fitted with radar-absorbent composite superstructure for reduced signature. All four boats underwent a mid-life upgrade adding new sensors, missiles and command systems.

In service since 1998 · 1 operator countries

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

250

crew

Procurement snapshot

Availability & export

National export licensing

Subject to Finland export-control approval; verify eligibility with the manufacturer.

Channel: Direct commercial / G2G

Fielded & proven

Limited · 1 operator

In service since 1998. Status: active · ~4 built.

Lifecycle cost (est.)

No public unit price to model from.

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.

Full specifications

Firepower

Armament, payload and guidance.

Main armament Primary weapon: main gun, cannon or missile type.: 1x Bofors 57 mm naval gun

Physical

Dimensions, weight and crew.

Length Overall length including gun/probe where applicable.: 51 m

Naval

Displacement, speed, endurance and diving depth.

Displacement Standard displacement in tonnes — the ship’s size class. Larger hulls carry more but cost more and are less agile.: 250 t
Max speed Top speed in knots (surfaced, for submarines). Higher aids positioning and screening.: 30 kn

Stronger than 74% of warships
Complement Crew size. Fewer eases manning cost; more may indicate a larger, more capable platform.: 18
Propulsion plant Machinery type — nuclear reactor, gas turbine (COGAG), CODAG, diesel-electric, AIP.: 2x MTU diesel engines, waterjet propulsion

Program

Cost, production scale and operators.

Units built Total production run. Higher means proven manufacturing, mature logistics and spares availability.: 4

Stronger than 57% of warships
Operator countries Number of countries operating the system. More operators means broader support ecosystem.: 1

Stronger than 45% of warships

Specifications compiled from public Rauma Marine Constructions and reference sources ↗. Published defense figures are approximations — treat comparisons as directional. Last verified 2026-07-02.

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