Conceptual illustration, Finland’s squadron 2020 corvette
Naval blog “EagleSpeak” decries our inability of operate surface warships in the Arctic, but this is his bottom line
“Fault finding will get us nowhere, the need is to look to our allies who operate in these waters and see if, among the hull types we need they have some ice-hardened ships whose designs we can obtain. Now.”
If we do want to do that, there is really only one choice, Finland’s new ice capable corvette we talked about here. The original post is now more than five years old, but updated information is in the comments, much of which I have linked below.
Fortunately they are already designed to us a great deal of familiar equipment much of it from US manufacturers.
They will use the same 57mm gun used by the NSC, OPC, and both classes of LCS.
They will use the Sea Giraffe radar common to the OPC and Independence class LCS.
They will use ESSM surface to air missiles, a standard item on most US surface combatants, apparently to be launched from Mk41 VLS.
The Finns will be using the Israeli Gabriel V as their surface to surface missile, but it should be relatively easy to substitute a standard US surface to surface missile, particularly the Naval Strike Missile, which is considerably smaller.
The sonars currently planned are from Kongsberg Maritime AS. If not replaced by US sourced units, they would be unique in the US fleet but the hull mounted “SS2030 sonars will be delivered to the Finnish Navy complete with hoistable hull units and ice protection to ensure safe and efficient operation in the often harsh conditions of the Baltic Sea.” The variable depth “SD9500 is a light and compact over-the-side dipping sonar with outstanding horizontal and vertical positioning capabilities for diver detection, ASW duties and volumetric survey assignments in shallow, reverberation-limited waters.”
They would be unique among US warships in being able to both lay and counter mines.
Propulsion is CODLAG, combined diesel electric and gas turbine. Four diesel generators producing 7,700 KW (10326 HP) provide power for cruise (probably about 20 knots). A GE LM2500 gas turbine provides over 26 knot sprint speed. This is the same gas turbine that powers the NSC, Burke class destroyers, the new FFG, and numerous other ships. It is the most common gas turbine in the world.
The propellers were developed with the help of the US Navy.
“The propellers are a minor project on their own, and are set to be of a highly advanced design. This is due to the somewhat conflicting demands of high top-speed, small diameter (due to overall draught requirement), and low noise (and high cavitation margin). All this, while at the same time being strong enough to cope with ice.”
Its primary characteristics are reported to be:
- Length: 114 m (374 ft)
- Beam: 16 m (52 ft)
- Displacement: 3,900 tonnes (3,800 long tons; 4,300 short tons)
- Crew: 70 to 120 sailors
- Speed: 26+ knots
This makes about 13% smaller than the OPC or NSC, but 30% larger than the 378s. First of class is expected to be completed 2024.
We could buy the plans and then compete procurement in a US shipyard. These might be built concurrently with the OPCs, possibly replacing some of them. Ten units could give a two squadrons, one for the Atlantic and one for the Pacific. In wartime that would almost guarantee the ability to keep three underway in either ocean.