What are the Requirements? Who are the Contenders? 

An Opinion Editorial by Udea Station

A frigate is essentially a class of defensive vessel, which provides a protective screen for merchant ships plying their trade through our sea lanes and for our deployed naval support ships with embarked personnel, against a range of threats above, below and on the ocean. Their employment context is very different to a fast attack missile boat or an Arleigh Burke destroyer launching long-range Tomahawk missiles. Frigates are more of a guardian within our maritime domain and less an aggressor. So, if you get the opportunity to gently explain that to your neighbour Karen, please do so.

The Anzac replacement will likely be sourced from the current FVEY (Five Eyes) nations supplier base. There are capable Korean and Japanese options, but they won’t be any cheaper and may have some significant ITARS (International Traffic in Arms Regulartions), IP sharing, and integration hurdles which would need to be addressed. European frigates are also capable, however a directly sourced European Frigate often possesses combat and sensor systems which are European-centric and often are not as seamlessly integrated into the US-Australian maritime networked architecture which we have historically used. There are also questions about the level of sustainment support from EU defence suppliers. Furthermore, there is often no tangible advantage regarding acquisition costs compared to our traditional FVEY frigate suppliers. 

Because of our long SLOC (Sea Lines of Communications), broad area of maritime interest and that the chosen platform will have a 35 year operational lifespan, it is important that room for capability growth in the platform is accounted for in terms of sensors, weapons and machinery. Therefore any future RNZN frigate will have to be comfortably over 5500 tonnes full load and possess long range and extended endurance characteristics suitable for Trans-Pacific operations. Furthermore, with the present crew restraints in operating a small Navy, each Frigate must sail with less than 150 embarked personnel and be highly automated. Neither the cheapest nor the most expensive options are the best. There is more to the cost-capability spectrum than meets the eye. 

The Type 26

The Canadian variant is likely to be the most compelling of the Type 26 class in terms of its overall capability package for the RNZN. However, it is a whopping NZD$5.3 billion per hull. The RAN (Royal Australian Navy) variant is slightly cheaper and the RN (Royal Navy) variant, though the cheapest, is less capable than the other variants. Yet it is still too expensive for the capability it possesses.

There is a massive cost penalty to be paid in purchasing the Type 26 as all variants are part of a local naval shipbuilding programme, which is just as much about creating local industrial capacity and local jobs, as they are about their role as surface combatants. The Type 26 for the RNZN is basically dead on arrival because of its huge sticker price.

The Type 31

The Type 31 option referred to in a previous thread by Dr. Wayne Mapp, seems at first glance an acceptable solution. It is substantially cheaper than the Type 26. It is a design variant of the Danish Iver Huitfeld Class, which is an AW (Air Warfare) frigate evolved from the earlier Absalon Class flexible support ship. However, in its cut price RN configuration, the Type 31 has only an austere level of CMS (Combat Management System), sensor and weapons fit-out. It actually offers a capability slightly less than what the upgraded ANZAC Class will be. Its ASW (Anti-Submarine Warfare) abilities are, in my opinion, weak. I suspect that Wayne, based on the estimated final cost he provided, has cost-factored in all the likely additional capabilities per CMS, sensors and weapons that would be required so that it is able to conduct ASW, EW (Electronic Warfare) and AD (Air Defence) and actually be survivable as both a SLOC escort and submarine hunter, or being able to be tasked on independent operations at long range even within the periphery of the intensive maritime shatter zones that will be a feature of the Indo-Pacific post 2030. In its RN specification it only has an AD capability that would enable it to survive attacks as they would be expected in constabulary type operations.

I am not sure though if Wayne has included in his upgrade estimates the acoustic rafting of engine room machinery required for an ASW platform, where quietness is paramount. In my view the Type 31 is hindered by its diesel-only propulsion and the lack of an electric drive mode. The vessel will require further adaptation to include a towed array, which is a fundamental component that an ASW frigate must have. All these required must-haves will blow out the acquisition cost. The vessel would require a further design review to get it at a capability level we would require. The warning I give is that the so-called cheap Type 31 may not be so cheap in the end. 

Any future Kiwi frigate will have to be extremely competent against a capability peer rival in the context of the Indo-Pacific. If New Zealand were in the Caribbean or South Atlantic where the Type 31 is likely to be deployed then fine. However, for a Type 31 to work in the context of the Indo-Pacific post 2030, it will need to be fully interoperable within the Air-Space-Maritime domain architecture of our close partners – principally Australia, the USN (US Navy), Canada and possibly the JMSDF (Japan). This means the essential inclusion of Cooperative Engagement Capability (CEC), Aegis Baseline 10 software, a very capable AESA (Active Electronically Scanned Array) radar and a solid EW (Electronic Warfare) capability.

A Type 31 frigate will not do the job that we or our partners require a RNZN frigate to do, if it is going to have a level of capability that the Royal Navy is acquiring. To get it right for the kind of operations that it will be expected to be tasked on will require the virtual evolution of a new ship. It is possible to build such an evolved and improved vessel, but there will be delays and in my view there is in existence an ideal turnkey solution that offers a better way forward. The Type 31 and Type 26 programmes are not the only frigate options to focus on. 

The Constellation Class

The only alternative left is the new USN FFG-62 or ‘Constellation Class’, based on the proven FREMM design. This vessel is the peer of the Type 26 in a combat capability sense, but at only slightly more money than what a Type 31 would end up costing following all the additional and complex changes required for it to be able to safely operate independently in the Indo-Pacific of post-2030. The USN’s proposed FY2022 budget requested US$1,087.9 million (NZD$1565m) for the procurement of the third FFG-62, which includes all the essential government furnished equipment (GFE). It is a true multi-role surface combatant, able to conduct the required spectrum of ASW, ASuW (Anti-Surface Warfare), EW and AD roles.

The USN was able to get costs down because they started with a set of tightly prescribed requirements to get the frigate fit-out configuration they required. They drew upon existing machinery, propulsion, combat and sensor systems that were already in hot production or within supply chains across the USN fleet. Another aspect the USN used in getting cost processes under control was by selecting a prime builder (Fincantieri Marinette Marine) who had an existing design (the FREMM) and a prime systems integrator (Lockheed Martin), who has a considerable supplier and product line depth to draw upon and at scale. 

A future RNZN frigate programme could tack on to a planned USN production block order for the Constellation Class and thus be able to tap into the long lead-line bulk buyer advantages that the USN can achieve through their supplier pool depth and weight of purchasing scale across the build programme. New Zealand was able to take advantage of this kind of economies of scale recently with respect to the P-8A and C-130J acquisitions because of our FVEY privileges within the US DSCA (Defense Security Cooperation Agency) regime. There is also the potential for further cost savings as some items from the current Anzac Class (following a refresh or block upgrade) can be cross-decked over into a Kiwi Constellation Class as they are already pre-integrated into the vessels combat management systems software. For example the Phalanx 1B CIWS, the Mod-5 127mm main gun, the Sea Ceptor missiles and decoy systems. 

The ‘keep it simple’ approach in going down the Constellation Class route is definitely worth serious consideration in what will be the biggest defence procurement project in NZ history. It is the most de-risked option in my view. The US support and sustainment chain is the gold standard (both the Brits and Europeans are pretty rubbish at that) and as a platform has been been conceived principally for Indo-Pacific operations. In terms of combat survivability it is better than the Type 31 as it is being built to full US Naval warship construction standards where as the Type 31 is planned to be built to Lloyds Register Naval Ship Rules. The Constellation Class will possess full interoperability with our close regional partners in terms of being able to tap into the full networked architecture of the air-maritime-space domain well as with other synergetic NZDF assets such as the P-8A, the WGS-9 (Wideband Global SATCOM system) and the likely Sea Sprite maritime helicopter replacement, the MH-60R

Finally, the Washington DC welcome mat is much bigger for New Zealand, opportunity wise, than Number 10 Downing Street. If New Zealand were placing a Constellation Class order, it would be prudent to leverage FTA (Free Trade Agreement access with the US as a complementary MFAT initiative with negotiations running in parallel. Defence-Diplomacy-Intelligence-Trade are not silo’s in themselves, but interdependent with each other and it may well be the final puzzle that gets NZ the US FTA bi-lateral it has desired for the last 25 years. I have never been able to understand why that golden penny hadn’t dropped in Wellington much earlier. Washington, when the right buttons are pressed, looks more favourably upon trade access into their markets when security considerations utilising their defence export industries enter the FTA quantum. 

As for numbers, three hulls are the absolute minimum number of Frigates the Kiwi Navy requires for the next 30 years – a fourth hull, though optimal, can be ordered later. Nevertheless, the RNZN must also have what is called a “Zero Ship”; in other words a land based frigate training centre that replicates onshore all functional competency tasks required thus allowing the 3-vessel frigate fleet to spend more time at sea conducting security operations.

This means far less sea-days devoted to onboard training and a shorter timeframe conducting pre-deployment work-ups. This means the generation of a 4th crew rotating through the ‘Zero Ship’ under training whilst the other frigates are deployed. Moreover, the plug and play nature of modern modular frigate designs and advanced shore maintenance management and sustainment support systems, also mean that 9 month long refits every 5 years can be greatly reduced getting the ship and crew out on the ocean with greater frequency. In many respects that ‘Zero Ship’ is the “Fourth Frigate” of the fleet.

My final word is that – all going well – it takes 6 years to build a frigate from the time an order is placed with the ship yard if it is a vessel currently in hot production, until it finally gets commissioned into a Naval service. If it is a first of type for a Navy to get to grips with, it can take further time for the crew to fully introduce the capability. This means that the incoming government in 2023 will have to make its decision within that three-year term to lock into a frigate build programme like the Constellation Class and have the first new vessel in the water before the first Anzac Class is decommissioned. We must not find ourselves again in the situation whereby we have a lengthy period of time when there was actually no frigate capability like what happened recently. The risk is too great considering the level of strategic uncertainty in the Indo-Pacific region from now on, which includes a push by a super power using ‘sharp power’ tactics right into our South Pacific neighborhood.