Finland Rauma Marine Constructions
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
t
30
kn
500
nmi
18
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. Why so few systems publish one →
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 Hamina-class can carry. Linked items have a full spec page.
Full specifications
Firepower
Armament, payload and guidance.
| Main armament Primary weapon: main gun, cannon or missile type. | 1x Bofors 57 mm naval gun |
|---|
Protection
Armor, countermeasures and survivability.
| Countermeasures Self-protection: chaff, flares, DIRCM, towed decoys, smoke dischargers, jammers. | Rheinmetall MASS soft-kill decoy launcher, Philax chaff and infrared flares, Matilda radar warning receiver |
|---|
Physical
Dimensions, weight and crew.
| Length Overall length including gun/probe where applicable. | 51 m |
|---|
Propulsion
Engine, power and fuel.
| Engine Powerplant model and type. | MTU 16V 538 TB93 diesel |
|---|---|
| Engines Number of engines. Twin-engine gives redundancy at higher cost. | 2 |
| Propulsion type Turbofan, turboshaft, diesel, gas turbine, solid-fuel rocket, ramjet… | Diesel with Rolls-Royce Kamewa 90SII waterjets |
Sensors & avionics
Radar, sensor suite and datalinks.
| Radar Primary radar. AESA (active electronically scanned array) is the current state of the art. | TRS-3D/16-ES multimode 3D acquisition radar |
|---|---|
| Sensors IRST, EO/IR turrets, laser designators, sniper pods, thermal sights. | Saab Ceros 200 fire-control radar with 9LV fire-control system, Sagem EOMS electro-optical system, Simrad Subsea Toadfish sonar, Sonac/PTA towed array sonar |
Program
Cost, production scale and operators.
| Units built Total production run. Higher means proven manufacturing, mature logistics and spares availability. | 4 |
|---|---|
| Operator countries Number of countries operating the system. More operators means broader support ecosystem. | 1 |
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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What is the main armament of the Rauma Marine Constructions Hamina-class? +
The Rauma Marine Constructions Hamina-class's primary weapon is the 1x Bofors 57 mm naval gun.
What engine does the Rauma Marine Constructions Hamina-class use? +
The Rauma Marine Constructions Hamina-class is powered by the MTU 16V 538 TB93 diesel.
How many countries operate the Rauma Marine Constructions Hamina-class? +
The Rauma Marine Constructions Hamina-class is operated by 1 countries.
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