HX Challenge pt. 2: Born Joint

When two French fighters landed at Tampere-Pirkkala AFB this week it was the underdog that arrived. While last week’s eurocanard might not be a favourite, the Rafale is an even less likely candidate according to most analysts.

But truth be told it is difficult to tell how much of that perception is based on the lack of an active marketing campaign compared to the rest of the competition. The HX process might have received international praise for its transparency, but that only extends to how the process is being run, and not how the contenders are doing. The current ranking, to the extent there is one at this stage, is well and truly hidden from view.

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Rafale B ‘301’, DGA’s and Dassault’s testbed, shown here airborne during earlier tests. The aircraft carries six AASM boosted precision-guided bombs, two Meteor very-long range air-to-air missiles, two MICA IR short-range air-to-air missiles, two large drop tanks, and a Talios targeting and reconnaissance pod. Picture courtesy of © Dassault Aviation – A. Pecchi

The fact that the two Rafales touched down on Pirkkala does however tell us something – Dassault still thinks they have a non-trivial chance of winning. Flight tests are expensive, even a moderate estimate puts the costs for a manufacturer to participate in HX Challenge at something like 1.5 million Euro (it could easily be double that even in direct costs). The fact that Dassault, and the rest, are coming shows they believe the potential benefits to be worth it. This is in stark contrast to most of the recent fighter competitions held in Europe (Denmark, Norway, Belgium, Switzerland…), where roughly half the field have usually dropped out before final offers are sent in. That is a big show of confidence in the fairness of HX, and big kudos to the MoD, LOGL, and the Air Force for that!

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Rafale B ‘301’ (rear) and ‘352’ (front). The reason why Dassault didn’t bring a single-seat C-version was to maximise the number of flight hours they are able to provide to Finnish Air Force personnel, but is also a testimony to how closely related the B and C models are to each other. Note the white bulge behind the blade antenna on ‘301’, likely associated with some F4-standard subsystem, the missile warning sensor on the tailfin (looking like a black dot), and the different coloured covers for the EW sensors on the front of the canard root and on the air intakes. Source: Joni Malkamäki/Ilmavoimat

But back to the French offer. Many of the themes can be recognised from last week. The Rafale would “protect Finland’s integrity”, further strengthen a strong European partnership, and the aircraft is being offered “with the full support of the French government”, to use the words of ambassador Serge Tomas. The aircraft would also be delivered with “no performance restrictions” compared to the French version, and there will be “lots of open books” and technology transfers.

But there were also notable differences in tone when compared to the Eurofighter. The production lines will stay open “for the next decades”, as opposed to the Eurofighter lines that are slowly cooling down. And while the Eurofighter is being sold as the great cooperative project, the French are well-known in security policy circles for their reluctance to trust in others. This is also what they are selling to the Finnish Air Force.

We understand your concept

Those simple words contain a lot. We know you don’t trust in allies to step in and save the day, we understand your wish to be able to go alone if the need arises. The Rafale is the tool that allows you to do so.

French and Finnish national security policy might not have much in common, but Dassault certainly has found the common denominators there are, and they are running with them.

A sobering reminder of just how ready to go alone France is found in the fact that one of the two Rafales currently in Tampere is an operational Rafale B F3R from SPA 81 Lévrier (Greyhound) of EC 2/4 La Fayette. The main mission of the unit is nuclear strike as part of the Forces aériennes stratégiques, the land based air component of France’s completely independent nuclear deterrent. However, like sister unit EC 1/4 Gascogne, they do also fly conventional missions, including operationally over Libya, Mali, and in the Middle East. The F3R is the current standard, and was delivered ahead of schedule, meeting performance targets while staying inside the budget. Any Finnish order would be of the F4 standard that is currently in development, and which has an added focus on connectivity, further developed electronic-warfare capabilities, as well as new weapons. The other Rafale, ‘301’, is a joint-DGA and Dassault testbed, and is equipped with numerous subsystems associated with the F4.

The F4, and the upcoming F5 standard, will also allow the Rafale to remain a key part of the FCAS-system, ensuring that the Rafale stays in French service well into 2060’s*.

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Rafale B ‘352’ 4-FU having just arrived at Tampere-Pirkkala AFB. Note the greyhound of SPA 81 on the tail, Talios pod on the right side of the fuselage, FSO bulges in front of the canopy, as well as wingtip MICA IR missiles. Source: Joni Malkamäki/Ilmavoimat

Another good example of where French and Finnish national security interests align, and one pushed heavily at yesterday’s media day, is the emphasis on European solidarity. “France is leading the process to build a solid, European defence policy,” as ambassador Serge expressed it. This was also the point he came back to when questioned about what France can offer on the national security side that the other eurocanards cannot, and he does have a point. Finland’s stance on Article 42.7 might be ambiguous (and set to remain that way for the foreseeable future), but Finland most certainly is interested in a deepening European defence cooperation in a way that few other countries are. Except France.

It is a strange world when the country that has given us the gilet jaunes can market themselves as “the reliable and predictable national security partner”, but this is where we are in 2020. In part this is also due to the difference in French domestic and foreign politics. While French internal matters might be seeing quite a bit of turmoil, their foreign policy has been remarkably consistent during the last few decades. And that policy include a willingness to mobilise the sizeable force that is the French military whenever French interests are threatened. This is not only seen in Syria and Libya, but also in Mali and, crucially, in how France has stepped up their presence in the Baltic Sea region following Crimea. This includes ground troops, but also a sizeable contribution to Baltic Air Policing. The trick then is to ensure that French interests align with ours, something that is easier said than done. However, I would like to note that we are rapidly approaching diminishing returns in our already very deep cooperation with Sweden and the USA, something that isn’t the case for the Finnish-French relationship.

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It apparently needs to be repeated: HX Challenge is not a cold-weather test, but a verification of sensor and other prestanda as reported by the manufacturer. As a matter of fact, ‘301’ did separate winter tests for Dassault a year ago at Rovaniemi AFB. Source: Ilmavoimat FB

The French willingness to act on their security interests in turns leads to the next point that Dassault likes to make, namely that the Rafale is combat proven. Crucially, this isn’t just about dropping bombs in COIN operations, but include having “been tasked to go into very contested environments”. Famously, Rafale did fly missions into Libya during the early stages of the campaign when Gaddafi’s air defences were still operational, and it has also performed missions over Syria in the face of the air defences found there. The weapons suite used is also interesting, as not only does it feature the same cruise missile as the Eurofighter, the MBDA Storm Shadow/SCALP, but it also sports the unique French AASM-family of boosted precision-guided bombs. These allow for stand-off range attacks (60 km range reportedly being “not too far from the truth“, but obviously depending on launch height and speed), and come with a number of different seeker heads including INS/GPS, INS/GPS/IR, and INS/GPS/laser. As such, the Rafale is well-equipped to take out any of the targets envisioned in the Finnish RFQ.

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A single-seat Rafale C of 1/7 Provence in air-to-air configuration at BA 113 Saint-Dizier-Robinson, that also happens to be the home of the 1/4 La Fayette. Picture courtesy of © Dassault Aviation – K. Tokunaga

Traditionally one of the weaker parts of Rafale’s sensor suite has been the Damocles targeting pod. This was recognised as lagging behind the competition already a number of years ago, and the Thales Talios has been brought online as part of the F3R standard. The performance of the pod, capable of both reconnaissance and lasing, is likely one of the things that the Finnish Air Force will be eager to test. Unfortunately the huge AREOS strategic reconnaissance pod has not been brought to HX Challenge (at least not by air), which likely indicate that it isn’t being included in the offer at this stage. Unsurprising, but still a bit sad as it would have offered a really interesting step-change in capability. Another sensor that likely will attract a lot of attention as well is the Front Sector Optronics, the FSO. The FSO is made up of two modules, an IR- and a TV-sensor. As part of the F3/F3R program the TV-sensor has been upgraded, and the performance is rumoured to be very good thanks to high magnification and near-IR wavelengths. The IR-sensor is currently going through its update programme, but for the time being it is likely that the setup tested at HX Challenge feature the old IR-sensors. In addition, a laser rangefinder is also included, and the whole set can be slewed by the other active or passive sensors to find and identify an airborne target. This is in line with the Rafale putting great emphasise on passive intercepts of enemy targets through the use of several different passive sensors and fusing the data to present the air crew with a single threat picture. Whether it works in the cloudy skies of Finland is exactly the kind of question HX Challenge is designed to answer, and unfortunately this interesting answer will go straight into the folder marked “SECRET”.

*Often the FCAS designation is erroneously used for the new joint Franco-German fighter currently in development, while in fact the FCAS is an umbrella term to cover numerous air- and ground-based system making up the Future Combat Air System. Or as Airbus puts it, a system of systems “composed of connected, manned and unmanned air platforms, enhanced by different sensors and effectors. They will be part of an open, scalable system architecture that enables the inclusion of future platforms and new technologies”

HX Challenge pt. 1: Complete Independence

HX Challenge kicked off for real this week, with the Eurofighter Typhoon being the first contender (the sales team uses the Eurofighter designation, but I sincerely hope any Finnish buy would include us switching the British name. One possibility I might accept is translating it to Pyörremyrsky).

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The Eurofighter Typhoon FGR.4 of the RAF’s No. 41 Squadron (with the awesome motto of Seek and Destroy) takes off from Tampere-Pirkkala airport. As part of the same launch the T.3 got airborne with a Finnish Air Force backseater. Picture courtesy of BAE Systems/Kalle Parkkinen

Did we learn anything groundbreaking yesterday? Not really, but the media day did provide a comprehensive insight into what the consortium in general and BAE Systems in particular believe is their strong cards in a competition that is steadily moving towards the contract announcement next year.

The key word is “independence”. You buy it, you own it, and you decide exactly how you want to use it. These are notions repeated throughout the press material and briefings, and it is clear that they are aimed at differentiating the European project against the US competitors. The Eurofighter is described as providing an “unique opportunity” when it comes to taking control of the country’s security. The “no closed black boxes”-policy provides the ability to independently operate, maintain, and control the aircraft, also when it comes to questions such as mission data and upgrade paths. Full control of mission data is described (in the Finnish press release) as “indispensable” for operating a modern combat aircraft, and something that provide an information advantage that will only become more important as time goes*.

However, this should not be interpreted as BAE Systems pushing the “buy second best but get full control”-line. The aircraft is described as being the “most advanced multi-role aircraft on the market”, with the potential Finnish aircraft being given as ‘Tranche 4’-standard, i.e. one notch above anything produced up until this point. This is roughly the same configuration as the German order under Project Quadriga, importantly sporting the E-Scan Mk. 1 AESA radar, an upgrade compared to the Kuwaiti-standard featuring the export Mk. 1A. Another interesting detail when it comes to sensors is that of the two Eurofighters taking part in HX Challenge, a single-seat FGR.4 and a twin-seat T.3, one carried the current standard Litening 3 pod, while the other had the brand new Litening 5 which is currently on offer to Germany and expected to be acquired by RAF in the near future. The Litening 5 is also offered in an updated version with a synthetic aperture radar (SAR) integrated into the body of the otherwise electro-optical targeting and reconnaissance-pod. As a side-note, the Finnish Hornets received the most advanced version of the Litening II, the Litening AT, as part of their MLU2-upgrade.

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To further emphasise the pan-European aspect of the Eurofighter project, all of the partner nations embassies were represented at the media day. It also clearly shows the big advantage in the number of significant operators the aircraft enjoys over the competition (with the exception of the F-35A) in this regard. Left to right: Luis Garcia Lumbreras, of the Spanish Embassy in Finland, Hans Werner Koeppel, of the Germany Embassy in Finland, Tom Dodd, British Ambassador to Finland, and Gabriele Altana, Italian Ambassador to Finland. Picture courtesy of BAE Systems

When it comes to weapons, the Eurofighters in Tampere-Pirkkala came equipped with ASRAAM short-range air-to-air missiles. Interestingly enough, the short-range air-to-air capability is not amongst the weapon systems described as ‘best-in-class’ in the press release. Instead, the weapon suite is described as offering “the widest range of weapons in the HX competition”, with beyond visual range air-to-air, deep strike, and high precision air-to-surface capabilities being best-in-class. It’s easy to see the close cooperation with MBDA playing a role here, as the weapons alluded to are the company’s Meteor, Storm Shadow, and Brimstone/SPEAR 3 respectively. The claim certainly seems tailored to meet the Finnish focus on the air-to-air role as well as deep strike, and while it is marketing, it is difficult to find weapons currently on the market that based on open sources can be stated to be objectively superior to the Meteor and the Storm Shadow, with the Brimstone and SPEAR 3 lacking direct competitors in most western arsenals.

But the HX Challenge isn’t just about flying around and punching holes in the air, a key part of the testing is the performance on the ground. This include not only studying how the aircraft function when the temperature is hovering around the freezing point, e.g. whether moisture getting into small crevices and freezing there will break stuff, but also what happens when the maintenance takes place outdoors or when the runway isn’t nice and dry (Finavia is cooperating with the evaluation by not maintaining the runways to their usual standard to simulate winter operations from dispersed bases). In fact, the ground testing will likely be more revealing than the air sorties, which in essence should only confirm data received in the offer and already verified in laboratory conditions.

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Three Italian Eurofighters during their Icelandic Air Policing rotation last year. Picture courtesy of BAE Systems

It is no surprise then that BAE Systems has also answered to this requirement, emphasising the robustness of the aircraft and the ease of maintaining it in similar conditions, such as during the Italian Air Force rotation to the Icelandic Air Policing mission and the RAF detachment operating in the Falklands. In Iceland the aircraft encountered exactly the kind of low temperature and wet conditions that the Finnish Air Force is interested in, and still were able to launch for all available missions. The squadron commander attributed this to the professionalism of the maintenance crews, as well as the fact that the aircraft is “very simple to maintain”.

The impact Tempest and FCAS will have on the development path still hangs as a cloud over the Eurofighter, regardless of promises that it will continue to be upgraded into the 2060’s. Still, the large number of operators gives the promise more credibility compared to corresponding promises by the other two eurocanards. With TyTAN going smoothly, the consortium is also confident enough that they have declared the cost of acquiring the aircraft to be “fixed and affordable”, going as far as stating the aircraft to be “the world’s most cost-efficient multi-role fighter”. The marketing plan seems simple enough – the Eurofighter is already here and working, it would increase Finnish cooperation with most of the major European security players, it allows fully independent planning of operations, upgrade paths, and maintenance (looking at you, F-35), and comes with a serious package of industrial cooperation benefits that would give Finnish aerospace and defence companies ample opportunities of cooperation with their European peers. How much of these talking points is backed up by real world prestanda is an open question, and one to be decided over the next twelve months.

The game just got serious.

*Interestingly, the information advantage-point is only found in the English version of the press release, and not in the Finnish one

Unmanned Underwater Vehicle in the defence of the Gulf of Finland

The videoclip below is interesting.

At the 1:57 time stamp, the Finnish Navy is seen launching one of the world’s most advanced autonomous weapons systems in its class. Having been deployed, it slips below the surface where it will lay in wait. Silent. Deadly. Not giving away its presence in any way, but constantly monitoring its surroundings. Waiting. Every movement is registered, and evaluated against the profiles stored in its database. And once there’s a match, it strikes, mercilessly.

I am obviously referring to the Finnish Navy’s PM16 (fi. Pohjamiina for bottom mine, confusingly enough a designation also used for the Finnish Army’s sensor-fused anti-tank mines), the newest addition to the Finnish family of influence mines that started with the PM90, and has since seen the addition of both the PM04 and the PM16 visible above (the PM90 has also been updated to PM90MOD status with an all-new “brain” and sensor-suite). In addition, the Navy has operated British Stonefish (as the PM-85E) and two different kinds of Soviet mines as the PM83-1 and PM83-2 (possibly the MDM-4 and UDM), though these are likely retired by now. Mines are seen as a strategic threshold capability in Finnish doctrine. They can seal off the chokepoints an aggressor needs to enter Finnish territory from the sea, and they will cause significant stress for anyone forced to operate within areas potentially mined. The very shallow nature of both the Gulf of Finland as well as the Archipelago Sea also lend themselves well to both traditional moored mines as well as influence mines. Obviously, history has also shown that in case war would break out, mines can be used to seal of the Gulf of Finland completely. This would make it impossible for vessels to transit between the Russian Baltic Fleet’s main base Baltiysk in Kaliningrad and the Russian mainland, and isolating St Petersburg from the Baltic Sea.

The influence mine is usually not included in discussions regarding autonomous weapons, though there really is no reason why it shouldn’t. After all, it is a system that does all decision making completely on its own once it is released into the wild, with no human in or on the loop. However, the main issue with the mines is that they do not move*, and once a minefield is cleared that area is free to use**. Wouldn’t it be even better if the weapon could move around, suddenly appear in areas previously thought of as safe, or quickly be despatched to areas where control over an area protected by a minefield has been lost?

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The original artwork of H I Sutton’s XLUUV concept. Picture courtesy of H I Sutton/Covert Shores

Naval analyst H I Sutton presented an interesting concept on his homepage recently. In short, he asked himself why the concept of operations for the Iranian Ghadir-class of midget submarines – stay hidden close to shipping lanes, wait for surface targets, and then torpedo them – couldn’t conceivably be automated. Wouldn’t an extra-large unmanned underwater vehicle in the class of the US Navy’s Orca-program be a good fit for the mission. Most XLUUVs at the moment are designed for modularity and the possibility of taking up a number of different roles. By focusing on the single relatively straightforward mission of ambushing surface vessels, the complexity and cost becomes lower (to get a feeling for the costs, the current Orca-program has seen Boeing bag a recent order “for the fabrication, test, and delivery of four Orca” worth 43 million USD, following on a roughly equally large contract covering the design phase of the competition).

The XLUUV envisioned by Sutton would sport air-independent propulsion in the form of a stirling engine, and two pre-loaded 533 mm torpedo tubes would provide the sting. An endurance in excess of a week could be achieved, and further cost-savings could be had by restricting the requirements when it comes to performance, including max-depth.

It is easy to see how beneficial a system such as that described by Sutton could be for Finland. A handful of vessels could easily cover the Finnish coastline, and they would be at their strongest outside of the archipelago, a place where the Finnish Navy prefers to spend a relatively limited part of their time. It is also easy to see the value of a remote sensor function where the XLUUVs occasionally send back particularly interesting sensor tracks to the mainland, though this naturally has to be balanced against the value of staying completely silent.

However, it is also easy to see why the Finnish Navy likely won’t pursue this line of development. The Gulf of Finland is shallow enough that more or less any part of it, including the open waters, can likely by mined with bottom mines (and in any case traditional moored mines remain in use as well), and as has been discussed earlier the narrow straight means that any vessel moving in the open waters will be spotted and could be targeted by both artillery and land-based anti-ship missiles. As noted earlier, what the XLUUV option would bring to the Gulf of Finland would not be so much the capability to close of the gulf, that is already possible, but to do so with systems that are extremely difficult to track and take out. The relatively limited firepower of two tubes would also mean that the main threat of any single vessel would be in the psychological realm rather than purely kinetic capability (though considering the limited number of vessels in the Russian Baltic Fleet, XLUUVs that only strike once they match the profile of e.g. LSTs would present a serious headache for the aggressor).

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The 15.5 meter long Echo Voyager is the basis for Boeing’s Orca XLUUV. Note the worker standing on the platform behind the vessel, providing scale. Source: Picture courtesy of Boeing

Another question is whether they actually might hold more use in the ASW role, as getting the sensors and weapons for the mission out to open waters without taking undue risks is something of an issue currently. This could also see a step-down to tube-launched 400 mm torpedoes (something the Swedish submarines currently use), making room for a larger number of torpedoes. The choice of only attacking underwater targets would also ensure a significantly smaller risk of collateral damage, something that certainly would aid in public acceptance of the system. Because let’s face it: it might be argued to be intellectually dishonest as I did at the start of this text, but the general public stills sees the sea mine as an explosive round and an autonomous XLUUV as a ‘killer robot’. Any procurement of the latter will first have to overcome this political hurdle.

* There are obviously self-propelled mines, combining the features of the torpedo and sea mine (somewhat ironically, as the term “torpedo” originally referred to mines, with today’s torpedoes being “self-propelled torpedoes”). Saab and Naval Group are both working on development projects aimed at producing modern solutions blurring the torpedo/UUV/mine definitions

** This is only true as long as the area really is clear, something that has proven to be surprisingly difficult to validate. Solutions such as the JDAM-ER with Quickstrike could also quickly change the situation, with e.g. two Super Hornets being able to swiftly put sixteen 450 kg mines on individual pinpoint locations

Sources:

Concept for low-cost autonomous anti-ship submarine

Laivaston sanomat 5/2018

Herätemiinojen kehitystyö Merivoimissa

The Naval Institute Guide to Combat Fleets of the World, 16th Ed.

Keep on Rockin’

News recently broke from Denmark that the cost of the new light hangars and other infrastructure being added to Skrydstrup Air Force Base in anticipation of the arrival of the first F-35s has almost doubled from 650 million DKK (87 MEUR) to 1.1 billion DKK (150 MEUR). The news itself isn’t quite as dramatic as it looks, part of the changes stems from a change in the decision of where on the base the buildings will be placed, and it actually matches the savings of 443 million DKK (58 MEUR) that the cost of the aircraft themselves have experienced since the acquisition approval in 2016 (part of which is the drop in price of the F-35A, part of which is a more favorable exchange rate), leaving the 20 billion DKK (2.7 billion EUR) total budget largely unaffected. However, it does highlight an often overlooked issue with fighter programs, namely that a new fighter is seldom just able to drop into the slot left by an outgoing aircraft. No two transitions are exactly alike, but it does offer an interesting perspective that in the case of Denmark, infrastructure representing 5% of the value of the fighter package will have to be built, and it is something to keep in mind in February when two different Boeing-built fighters will touch down at Tampere-Pirkkala to take their turn in HX Challenge.

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A Finnish block III F/A-18E Super Hornet (closer) and an EA-18G Growler flying over a decidedly northern Finnish landscape in this render. Picture courtesy of Boeing

The Boeing F/A-18E/F Super Hornet and EA-18G Growler namely are more or less plug and play when it comes to using the existing Finnish Air Force infrastructure. Granted there are likely some obsolescence issues, general need for modernization, and the simulators will have to be replaced/seriously updated, but in general the Super Hornet can jump right in where the Hornet is currently. Exactly how much that benefit is worth compared to the competitors is unclear, but with all manufacturers having problem squeezing 64 fighters into the 10 Bn Euro budget, that also include these kinds of infrastructure changes, Boeing will have a measurable advantage.

But it doesn’t stop there, as the Super Hornet fleet would be able to utilise many of the weapons currently found in the arsenals of the Finnish Air Force. These include not only the ubiquitous AIM-120C-7 AMRAAM and the somewhat less widely certified AIM-9X, but also the JDAM and JSOW, which aren’t in use by the eurocanards. While the timeline until the retirement of the Hornet is long enough to allow for a bit of planning in arms acquisitions, the savings in weaponry can quickly start adding up, and also ensures that there isn’t a gap in missiles orders but a rolling transition which makes stepped buys of HX-weaponry easier on the budget post-2030. An interesting weapon is the silver bullet AGM-158 JASSM, which reportedly has a shelf-life roughly stretching to the end of the Finnish Hornet-era. As it is safe to assume that any Finnish Super Hornet-fleet would use the JASSM as their long-range strike weapon, this would open up the possibility of a JASSM-overhaul (possibly including some features of the current AGM-158B JASSM-ER model) that likely would be cheaper than acquiring new-built Storm Shadows.

Renders are always an interesting subject, as they provide an indication of what the manufacturer sees as the aircraft’s strong cards. In the render above Boeing has not only included the mid- and low-band NGJ pods (Next-generation jammers) currently undergoing testing and an AGM-88E AARGM anti-radiation missile on the Growler, but the single-seat F/A-18E Super Hornet feature the AARGM as well, in addition to a podded IRST-sensor and a respectable air-to-air load of six AIM-120 AMRAAM and two AIM-9 Sidewinder missiles. Considering that the Finnish Air Force places an emphasis on the counter air mission, i.e. the “candidate’s capability to perform in combats both with fighters and ground based air defence”, this is a serious combat load for the mission (it might in fact be overtly ambitious as a general load considering the cost of the weapons involved) as it allows the aircraft to not only target enemy aircraft, but to force enemy ground-based radars to either go dark or risk receiving an AARGM-sized hole in their arrays. While the basic F/A-18E isn’t capable of the kind of widespread jamming as the Growler, it does bring more shooters to the SEAD-battle compared to just having a handful of Growlers. For those interested in the lack of external fuel tanks, it should be noted that the aircraft carry conformal fuel tanks, and that this is Finland and not to the USINDOPACOM, so range requirements are rather modest.

In the meantime the Finnish Air Force is building it’s multirole capabilities, which will carry on to the HX. In the clip above from current high-end exercise KAAKKO 19 soldiers of Kymi Jaeger Battalion provide suppressive fire while a JTAC first directs artillery fire onto target, and then directs a live JDAM drop from a Hornet to finish off. While one can discuss the role of the JDAM in contested airspace, the preferred high and fast drop profile isn’t necessarily a great idea if inside enemy SAM coverage, the modern low-density battlefield does provide settings where it could come in handy.

But the low-density battlefield doesn’t just create opportunities for the Air Force to pound enemy ground forces outside of their integrated air defences, it also places high demands on issues such as situational awareness to avoid own losses, both in the air and for the units being supported on the ground. While not the most talked about features of the Block III compared to earlier versions of the Super Hornet, two items brought in with it gives huge improvements in this field: the Distributed Targeting Processor-Networked (DTP-N) and the Tactical Targeting Network Technology (TTNT) data link. The short version is that the TTNT gives more bandwidth compared to legacy datalinks, allowing more information to be transferred between aircrafts (and other sensors), while the DTP-N gives the computing power to be able to make sense of this increased data flow by fusing not only data from the aircraft’s own sensors, but from the sensors of other aircraft as well. Together they allow for the creation of a Common Tactical Picture (CTP), ensuring that all aircraft knows what any of them sees.

Now, the CTP could potentially provide the answer to one of the headaches Boeing is likely facing, namely the F/A-18E + F/A-18F + EA-18G mix. The basic fighter in the (approximately) 64 aircraft fleet will be a single-seater, in this case the F/A-18E. In addition, a number of twin-seaters will likely be included to allow for training, in this case the F/A-18F. The Finnish legacy-Hornet fleet was made up of 57 single-seaters and seven twin-seaters, with the Finnish Air Force publicly stating that in hindsight they would have preferred a larger amount of twin-seaters (this led to the unfortunate “frankenfighter”, HN-468). E.g. Saab has solved this by offering a 52 + 12 mix of single- and twin-seaters, noting that twin-seaters offer better performance in a number of missions, including SEAD/DEAD, complex ground-attack scenarios, or with the backseater working as a mission commander.

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A Finnish F/A-18C Hornet during exercise Ruska 17, sporting a single AGM-158 JASSM under the starboard wing. Source: Ilmavoimat

The headache for Boeing is the fact that the EA-18G already takes up precious slots in the fleet. Looking at the typical carrier aircraft wing, it is likely that something along the lines of eight to twelve Growlers are included in the Finnish offer. Twelve standard twin-seaters would leave an Air Force with only 40 single-seaters, and while the twin-seaters are fully combat capable, there are additional costs associated with them (and with training WSOs/mission commanders). The Growlers in particular, while extremely capable and impressive, come with a premium price tag. The question then is whether the number of Fs could be scaled back? Notably the F-35A is offered only as a single-seater, and with modern fighters being easier to fly compared to legacy aircraft has made it possible to shift all or parts of conversion training to simulators and single-seaters. There is also no particular need for SEAD-configured F/A-18Fs, since that is what the EA-18G Growler is all about. The Finnish Air Force also currently flies the majority of the ground-attack missions, including long-range strike missions, with single-seat F/A-18C Hornets. The idea behind a mission commander is interesting on paper, but considering the generally improved situational awareness presented by wide-angled displays and the CTP, it is questionable if it provides enough of an edge to justify a serious buy of F/A-18Fs. Instead, leaving the mission commander role to either ground control or the senior F/A-18E pilot might very well be the desired outcome. The final ratio will likely be decided only once the wargames are over, but don’t be surprised if the number of F/A-18Fs is on the lower end.

Eurofighter goes Electric

When a European country without a domestic candidate looks for a multirole fighter, I usually rank the chances of the Eurofighter somewhere between “low” and “abysmal”. It’s not that it’s a bad aircraft, but the decision by the partner nations to focus on air-to-air performance, and to first roll it out into service for the air-to-air role, has meant that the aircraft has been weighed somewhat differently than what your average F-16AM operator wishes for.

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Often overlooked is the fact that BAE Systems is one of two companies whose fast jets currently are in service with the Finnish Air Force. The humble Hawk might be a far cry from the Typhoon, but it offers BAE Systems decades of experience of working with the Finnish Air Force. Picture courtesy of BAE Systems

However, not every country in Europe is a F-16 operator. Finland is a very happy F/A-18C Hornet operator, and looks at fighters in a somewhat different way from many otherwise comparable European air forces. Part of this is down to history, part of it is the lack of a military alliance, and eventually it all translates into doctrinal differences. The gist of the argument is that the air-to-air mission always comes first, and once that can be handled, the rest will take care of itself. Or as HX programme director col. Keränen puts it:

These scenarios [according to which HX contenders are evaluated] include counter air (air defence), counter land (air to ground), counter sea (air to sea), intelligence, surveillance and reconnaissance (ISR) and targeting, and long-range strike.

Out of these five scenarios, counter air is the most critical one and therefore takes precedence. Counter air is where a candidate’s capability to perform in combats both with fighters and ground based air defence is evaluated. This is a critical capability: the HX multirole fighter may get engaged in air combat or be attacked by ground based air defence in addition to other tasks.

The official translation of the Finnish text might not be the best, but you get the point.

For Finland, the Eurofighter actually does make sense in quite a few different ways. The focus on speed and semi-recessed missiles is just what’s needed for the air policing mission, which is the key operational mission of the Air Force in peacetime. Especially after Kuopio-Rissala became the most important base for the intercepts over the Gulf of Finland, cruise speed is of the essence. For the long-range strike role, even operating solely on internal fuel the Eurofighter/Storm Shadow-combination could easily replace the JASSM equipped Hornet. The Eurofighter also has a large number of operators, all with slightly different outlooks on how to meet the need of the modern battlefield, providing several development paths to choose from.

One of the more interesting changes to appear this autumn has been the renewed focus on electronic warfare in general and the SEAD/DEAD-mission set in particular. The Eurofighter feature the DASS (Defensive Aid Sub-System), but it has generally been regarded as inferior to the SPECTRA of the Rafale or to the upcoming Arexis of Gripen E. Whether this is a correct judgement or simply an effect of the focus placed on the EW-part of their aircraft in the marketing by Dassault and Saab is impossible to judge conclusively based on open sources, but it is now clear that the Eurofighter consortium has decided to step up their game in this area.

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Nothing quite says ‘electronic warfare’ as having the shape of the aircraft outlined in turquoise mesh. Image courtesy of BAE System, created by images.art.design. Werbeagentur

A key item here was the announcement of the Praetorian Evolution concept for a thorough upgrade of the DASS. Part of the larger Typhoon Long Term Evolution activity, in the words of a BAE Systems representative the “Praetorian Evolution is a conceptual roadmap that presents a number of options for a future DASS architecture”. As such, it isn’t a set package, but an assortment of options that can be picked by the operating countries to move forward with. A key part enabling this is the the ‘all digital architecture’ of the updated DASS. Elements of this already exist within the current DASS, but Praetorian Evolution would see the digital coverage increased within the system to take advantage of recent advances in the field. The idea is to turn the cranks to eleven, creating what Eurofighter has dubbed “digital stealth”.

Yes, it’s a marketing term. But as Eurofighter has decided to use the moniker for it’s EW-concept, it’s worth looking into what they mean with it to understand how they envision the Eurofighter will operate to stay survivable and lethal on the future battlefield.

The approach is two-pronged:

First, the situational awareness has to be good enough to supply the pilot with an accurate picture of the threat environment to highlight which emitters are where, allowing the pilot to make informed decisions to keep the aircraft out of range from SAMs and enemy fighters. A key part here is the mission data set (including the database allowing the correct identification of emitters), which can be updated within ‘hours’ to ensure that the aircraft understands what the sensors see. On a slightly longer scale, the software behind key subsystems such as the radars will be updated every few months. This is also a feature of the Eurofighter’s lack of locked black boxes and unforgiving IP’s that is a strong selling point compared to the transatlantic competition.

However, it isn’t always possible to simply hide and stay out of harms way. In those situations, the EW suite will do its best to either hide the signature of the aircraft, or create enough noise to make the picture confusing as to deny the enemy a targeting opportunity. For this part, the aircraft not only employ onboard, towed, and podded sensors, but will also feature the upcoming SPEAR EW. This is a stand-in jammer based on the same hardware as found in the BriteCloud expendable active decoy (also integrated on the Eurofighter), but mounted in place of the warhead on a SPEAR missile. This lighter and smaller load compared to the warhead allows for up to three times the range of the normal SPEAR, and ones fired the missile can fly towards the enemy and either simply blind the enemy radars, or spoof them by creating one or several (50 being mentioned) false targets. The triple-carriage of the baseline SPEAR is also available for the EW-variant, and allows the operators to mix and match however they want (a total of twelve can be carried on four hardpoints while still leaving the two ‘wet’ wing stations free for drop tanks). As the SPEAR is the RAF’s SEAD-weapon of choice, this allows for interesting combinations, where a pair of Typhoons can release a SPEAR EW acting as a false target to bait the enemy air defences into action, allowing the fighters to map the current positions of the enemy radars. These are then jammed by a salvo of a few more SPEAR EWs, while at the same time a dozen (or more) standard SPEAR missiles target the radars in saturation attacks. However, the SPEAR EW isn’t just a SEAD/DEAD weapon, but also plays an interesting role in air-to-air scenarios, where the ability to spoof enemy fighters create interesting tactical opportunities. While the SPEAR EW was officially unveiled only this autumn, it is part of the Eurofighter-package for HX.

Electronic combat capability is offered to Finland in our proposal in a different way [compared to the ECR] through developments in electronically-scanning radar technology and the integration of electronic warfare weapons such as SPEAR EW, which is being developed through a UK-funded programme.

Which brings us to another recently unveiled project that caused quite a stir, the Eurofighter ECR concept offered to the German Air Force.

The German Air Force is one of three NATO air forces to operate a dedicated SEAD/DEAD platform, in the form of the Tornado ECR operated by the TaktLwG 51 “Immelmann”. These will bow out together with the rest of the German Tornado-fleet during the next decade, and a replacement for the Tornado IDS and ECR fleet is sought either in the form of more Eurofighters or F/A-18E/F Super Hornets, with EA-18G Growlers providing the Tornado ECR-replacement. The Eurofighter ECR concept is tailored to meet the German requirements, and include signal-homing missiles in the form of the AGM-88E AARGM, new large podded jammers, two more ‘wet’ stations to allow the drop tanks to move out of the way for said jammers, and a new decoupled rear cockpit for the WSO. The ECR as such is not part of the offer to Finland, but “as with any technology developed by the Eurofighter consortium, the option of an ECR will be available to Finland as a future growth option.” The options also include picking just the parts of the concept deemed suitable for Finnish needs. This could e.g. translate into acquiring just the jammers without the new ‘wet’ stations and accepting the range and endurance limitations it causes.

The Eurofighter consortium’s claim is that “digital stealth” is more flexible and adaptable than traditional low-observable technologies which are built into the aircraft itself, and can more easily be adapted to face new threats. This largely follows the same line of reasoning presented by Boeing, Dassault, and Saab, and on paper hold serious merit. If there is a breakthrough in some “anti-stealth” technology, the F-35 might lose it’s most important unique selling point. However, for the foreseeable future the X-band radars will continue to play an important role in most engagements, especially for the crucial step of producing an accurate enough fix on the target’s location that it can be shot down, and here a smaller radar cross section is always smaller than a larger radar cross section. The question is how big a difference that makes compared to other features? Currently the answer is “quite a lot”, but will the same answer hold true in 2035?

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The large number of users is perhaps the best argument for the Eurofighter continuing to be updated into the late 2050’s. Here a Spanish aircraft touches down on Finnish ground. Source: Own picture

The Eurofighter is still an underdog in the HX programme. The largest question continues to be if, and in that case how, BAE Systems can guarantee that Finland won’t be left as the sole operator trying to keep the aircraft at the cutting edge past 2050. The aircraft itself likely isn’t the issue, the space and raw power certainly is there, but the question is if the other operators will be interested in spending money on it after the FCAS and Tempest programs sees new aircraft entering service sometime after 2040. Still, it wouldn’t be the first time an underdog scores big in a Finnish defence programme, and the Eurofighter does have a few really strong cards on hand. Played right, and the competition just might turn out to the benefit of the large eurocanard.

HX Challenge on the Horizon

The next phase of HX has started, and things are starting to get serious. Last Thursday the revised call for tenders was sent out, with a deadline for answers until 31 January 2020.

A crucial point here is that this is a planned continuation of earlier negotiations, and not a restart. The manufacturers are asked to refine their earlier offers, providing a clear package, including any potential updates that has taken place and generally improving their offers. While the original call for tenders was generic, this round all five have received individualised RFQs based on their earlier tenders.

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Much of the operational (including combat) use the HX contenders have seen has taken place in decidedly un-Finnish environments. As such, HX Challenge will verify to what extent data from this usage is transferable. Picture courtesy of © Dassault Aviation – A. Paringaux

Two notable developments have taken place this fall. The first is the allowance for different numbers of aircraft than the originally envisioned 64. This provide room for anyone able to squeeze in a few extra hulls, but also for anyone wanting to argue that higher availability and/or increased combat capability compared to the current legacy-Hornets allows for a smaller fleet. At the same time, the 10 Bn Euro ceiling has officially been approved by the government. As has been discussed earlier, the plan has throughout HX been not to ask “How much for this package?”, but rather “What’s the best package you can offer under a set budget ceiling?” Major General (Eng.) Renko also went on record last week to say that all five manufacturers experience “difficulties” fitting their offers under the ceiling. In the end, we will see five bids for just under 10 Bn Euro, with the difference between them likely being no more than change (relatively speaking).

We also finally have more details on the verification flight tests. The flight test programme, dubbed HX Challenge, will take place out of Tampere-Pirkkala in January-February. The field is home to Satakunta Air Command and the Finnish Air Force’s Air Combat Centre sorting under it. ACC is responsible for both flight testing as well as for participating in the development of air combat tactics and doctrines.

The aircraft will not be put in order at this event, but rather only verification of performance and subsystems will take place. This includes ensuring that the manufacturers haven’t supplied incorrect information to the simulations used for the evaluation, but also to test how e.g. electro-optical sensors work in Finnish conditions. In cases where both single- and twin-seaters are available, Finnish pilots flying as backseaters will also take part in the tests. While failure to show up for HX Challenge won’t by default disqualify a contender, it would weaken their chances moving forward in the competition. Considering the costs of flight tests this will be a serious test of how invested the contenders are, and by extension how fair the competition is felt to be amongst the industry. A few odd-birds are found in the field. F-35A is the sole single-seat only fighter, while the yet to fly 39F will likely be represented by the revamped 39-7 testbed. While Saab declines to discuss GlobalEye in relation to HX Challenge at this time, they more generally confirm that a verification scheme has been devised and presented to the Finnish Air Force. EA-18G Growler obviously can’t showcase it’s full capability in the region, so it will likely be verified in other ways as well.

HX Challenge is part of the first step in evaluating the combat capability of the aircraft, by ensuring that the input data for the later modelling is done correctly. After this is done, simulated scenarios from the RFQ will be run with four-aircraft strong flights (fun fact, Finland was one of the pioneers in developing two pairs as the basic air combat element in the 1930’s). The aim here is to judge the survivability, ability to perform set missions, and the effectiveness in destroying enemy assets. As this is the Finnish Air Force, air-to-air capabilities will be the most important facto. An interesting question is how exactly simulations will be run. The word virtuaalisimulaattori (virtual simulator) is used, which seems to indicate a full man-in-the-loop simulation (think DCS on steroids, video by Jonathan Lundkvist). This is interesting in many ways, and should give a more correct picture as the value of sub-systems such as helmet-mounted displays and wide-angle displays are included in the evaluation. A good is example is how Gripen pilots like to talk about the benefit their man-machine interface provide compared to more traditional presentations of data which rely heavily on numerical values, and how this isn’t evident in traditional Monte Carlo-style simulations. With HX Challenge and a full-blown simulation the four-ship combat value should be found as accurately as possible without actually leasing four-ships and having them blow stuff up.

These data will then provide the input for a round of grand wargames taking place in the later part of 2020. Here the HX contenders will be simulated as parts of the complete Finnish defence system. This third stage will be the sole stage following which the contenders will be place in any kind of order. Based on this picture of the fighting capability of the aircrafts in their 2025-configuration together with input from an study into the development potential of the system (it’s never just about the individual aircraft) up until the end of the 2050’s the final warfighting capability-ranking will be made, and this should then in turn dictate which aircraft will be bought (the rest of the conditions being pass/fail-style).

A Long Text about Seven Short Minutes

Twelve years ago, about this time of the year, I was charging down a sea lane in the outer archipelago as the helmsman and engineer of a Jurmo-class landing craft. On my left side one of my fellow conscripts sat and focused on navigating, as he was working as the skipper of the vessel that day. Both of us were also keeping a lookout around the vessel. We had both received the same training, allowing to us serve as helmsman/engineer or as the skipper/navigator of the Jurmo, and when out on longer exercises we usually rotated between positions every other day. Following a sharp left-hand turn which took us straight towards an island I spotted a Pansio-class mineferry. Just before the island we were headed towards we would turn sharply to the right, and the large vessel now sat directly at the turning point, in front of the island. As we got closer, I noticed that it seemed like the skipper might not have noticed the mineferry, so a couple of hundred meters out, with plenty enough time for us to take the turn safely, I drew his attention to the vessel and asked how close he wanted to go. “Oh fuck, I did not see that one coming,” he said. “Helm to the right.” I acknowledged the ordered and we used the fact that we had plenty of water under the keel to our advantage to cut the corner slightly to maintain a safe distance without having to slow down for the passage.

Just over eight years ago, I was on my first ‘real’ job in the maritime industry working the summer at local boatyard Kewatec Aluboat. Much of the job revolved around the Pilot 1500-class of fast pilot vessels which were just being finished and delivered to the Finnish pilotage service Finnpilot Pilotage Oy. Despite being a green mechanical engineer roughly halfway through university I got to do some fairly interesting stuff, such as riding along on the sea trials to keep book on results such as RPM relative to speed and noise level measurements. Eventually Kewatec would be my first full-time employer, and I spent a few really interesting years there before moving on to what was then Rolls-Royce’s waterjet division (now Kongsberg Maritime Finland).

Both of these experiences came vividly back when I last week got a Twitter DM with the Finnish Safety Investigation Authority’s report on an incident where the Pilot 1500-class fast pilot vessel L239 had come close to colliding with the Hamina-class fast attack craft Hanko last December. Out of curiosity I did a quick glance through the abstract of the report, and might have left it at that if it wasn’t for the fact that the newspaper headlines that came out of Finnish daily Turun Sanomat over the next days didn’t square with the impression I had been left with.

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24 October 2019: “SIAF: Attack craft hiding caused incident – requests risk assessment plan from the Navy”
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25 October 2019: “The Navy will continue to sail around with safety signal blacked out – The collision was 8 seconds away”

In fact, the report does not lay the blame on the lack of AIS on the part of the Hanko. Nor is AIS some kind of magic safety beacon. But let’s start from the beginning.

In the early hours of 1 December 2018 Hanko was transiting southwards in the Sköldvik sea lane. The weather and visibility was generally good (considering it was pitch-black with clouds), but the wind was near gale at an average speed of 16 m/s (note that in the narrow waters this meant a wave height of 2.4 meters). At the same time, L239 left Emäsalo pilot station and entered the same lane heading north. Hanko picked up the vessel as soon as she left port, and started tracking her using normal procedures. Notably, Hanko that had been steaming down the lane to the left of the midline (her left) altered course slightly to get over to the right side of the lane to allow for a standard passing where both vessels hold to starboard (i.e. right-hand traffic as is the international standard on the seas). Hanko, in accordance with standard procedures of the Finnish Navy, did not have her AIS switched on, but had reported her general area of operating to the local Vessel Traffic Service (VTS), which informed the pilot vessel that a naval vessel was operating in the area. L239 did however not spot the Hanko when she left port, and a radar echo of the vessel was dismissed as a flock of birds.

The plotted course of the L239 (red) and Hanko (Blue). Source: OTKES

The route was a standard run for the L239, and when the lane was empty the pilot vessels usually took the shortest (and somewhat more sheltered) route in the interest of saving time and fuel. This put the pilot vessel well to the left of the middle line, i.e. heading straight for the Hanko. While Hanko was cruising at a moderate speed of about ten knots, the L239 was doing close to 25 knots with the wind at its back. A few minutes later the crew on the bridge of the Hanko realised that the pilot vessel hadn’t noticed them and immediately stopped (as the vessel is equipped with waterjets, it is able to quickly stop even from a considerable speed). At the same time the skipper of the pilot vessel noticed something in front of him, and turned on the spotlight. This showed an unidentified vessel right in their course, so he quickly reduced speed and turned right towards the midline of the sea lane. The two vessels passed each other at approximately 40 meters distance. The whole incident had taken place in less than seven minutes from L239 leaving the port.

Here we’ll take a short interlude to discuss what AIS is and isn’t. AIS is an automatic transponder system that sends data over the normal VHF-band. This usually include the vessel’s name, position, heading/course, speed, and potentially a number of other pieces of information (turn rate, heel, destination, ETA, current mode of operation, …). On the positive side it is inexpensive, simple, and when combined with other systems such as radars and chart plotters it provide a situational picture that is easy to read and interpret. It is mandatory equipment for a number of vessels, including merchant and passenger vessels. Crucially, it is not mandatory for neither pilot vessels nor for naval vessels.

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AIS has been in the headlines a number of times in recent years, including its role in the collisions of Norwegian frigate KNMS Helge Ingstad and the two US Navy destroyers that collided in separate incidents in the Pacific in 2017. However, it is crucial to note that not only is AIS susceptible to spoofing, it can also simply be switched off at the flick of a button. In Finnish waters, as opposed to out on the high seas is the majority of vessels moving around are not fitted with AIS due to their small size. Pleasure crafts might not be moving around in the Sköldvik area in the middle of the night in two meter high waves in December in any huge numbers, but there’s always the risk that some local is heading out to check on his summer cottage. As such, AIS is not God-mode view on a bridge display, but just another (very good) source of information to build up situational awareness. As a matter of fact, navigating solely on electronic aids such as AIS, or radar for that matter, is not allowed under international rules, as all vessels are required to keep a proper lookout.

Going back to my opening story from 2007, there were a few issues that could have led to it ending badly. The first was that we were under a tight schedule. We were part of an exercise scenario with several moving parts, and it was crucial that our vessel were at the designated point at the designated time. The second issue was that the timing of us and the Pansio-class crossing paths was very unfortunate, with it coming from an unexpected angle and with our vessel turning towards it at a time window measured in mere minutes when it wasn’t silhouetted against the horizon but completely in front of an island. The vessel, like the Hamina-class, is also painted to easily hide in the archipelago, and the colours work extremely well. However, the Navy doesn’t just throw enlisted conscripts into a fifteen meter vessel with a thousands horsepowers to work with and see what happens. There are clear cut roles and procedures to follow to ensure safe operations, and before one gets to sign the line next to the word “Skipper” in the logbook there’s a number of steps and certifications that you need to meet.

As mentioned, these procedures include that both crewmembers keep a lookout. The reason is simple: the skipper will need to keep one eye on the navigation, including the paper chart, chart plotter, and the radar, while the helmsman will need to keep one eye on the engine instruments. If something starts to go ever so slightly off the rails, it is easy for either crew member to be distracted and spend too little time looking out the windows, and as mr. Murphy dictates, that always happens at the worst possible time. As such, having both crew members keep their eyes open is a necessity. In our case, the training showed its worth, and the situation was solved safely and without incident.

As such, reading the report, the most baffling detail for me personally is that the pilot vessel always operate with two certified skippers aboard, of which one function as the vessel crew and the other is the safety guy when the pilot is transiting between the vessel and the ship. This isn’t baffling in itself, but the safety guy has no duties whatsoever while the vessel is underway, not even a general recommendation to keep looking out the windows! While the vessel is built to be able to be operated by a single crew member, not using the available resources is a strange decision to say the least.

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FNS Hamina leading sister FNS Hanko, showing their dark colours optmised for hiding in the archipelago. Source: Own picture

The Hanko on the other hand was naturally operating with a significantly larger crew. The persons on the bridge included not only an officer of the watch, but also a navigator, a assistant navigator, and a dedicated lookout working outside of the vessel. As noted, the crew noticed the L239 as soon as it put out to sea, and assumed that the pilot vessel had noticed them in turn.

This was likely the single largest shortcoming on the part of the crew of the Hanko. Having a very good situational awareness thanks to good working procedures, it’s easy to start assuming this is how all professionals at sea operates. Giving a short radio call to the L239 to confirm that Hanko switches from left to right side of the sea lane for a standard meeting would have ensured that both vessels knew of each other’s presence. Hindsight 20/20, as they say.

However, the actions of the pilot vessel is harder to explain. The skipper knew that there was a naval vessel in the area but apparently did not try to locate it. There doesn’t seem to have been any discussion that the safety man would assist in keeping a lookout, nor any decision to slow down or keep in the correct part of the lane in case someone else was moving in the night. Granted the Pilot 1500 series is well-equipped to be handled by a single crew member, it sports two large displays for the radar and the chart plotter placed in front of the skipper to allow for a minimum of head movement when switching between checking them and looking out the windows. However, the rule (both written and unwritten) is that electronic aids support looking out the windows, not the other way around. This is especially true in cases where getting a clean radar picture is difficult, such as in rain or rough waves, where one easily end up either getting the screen overtly cluttered or filtering away real echos. While the report doesn’t mention it, the fact that such as large radar target as the Hanko was mistaken for a flock of birds does indicate that the radar didn’t provide a good and easy to read radar picture at the time of the incident.

Stealth interlude: Yes, Hanko feature signature reduction measures, but it isn’t invisible to radar by any stretch of imagination. In a later reconstruction the pilot vessel’s radar was able to pick up the FAC well beyond two nautical miles (beyond 3,700 meters), the VTS also got a clear radar echo of the vessel, despite the tracking algorithm having some issues tracking Hanko correctly at the time of the incident.

The report by the authorities notes five conclusions, of which two are related to the reporting processes for incidents and accidents on a national level. The three others are:

  1. The tracking of non-AIS transmitting vessels require use of radar and particular care by the VTS-operators,
  2. The resources of the pilot vessel were not used optimally considering the conditions,
  3. The crew aboard vessels that try to avoid detection don’t necessarily recognise the risks this create.

In other words, the report does not blame the Hanko, nor the lack of transmitting AIS on it’s part. The standard procedure of the Finnish Navy is to have the AIS turned off due to operational security considerations. Navies around the world have varied views on the use of AIS, with some having it always off, some having it on without IDs, and some having it on close to shore but off when at sea. Steffan Watkins has a good overview, but as usual things are different between the Atlantic and the Gulf of Finland.

A key difference is that Finnish vessels don’t transit. The operating area often starts when the quay is left behind. Another is that the Finnish Navy uses dispersed and wartime infrastructure, which you don’t necessarily want to show on the internet. And while fixed infrastructure likely is known to the adversary, the usage isn’t as easy to judge considering the concealed nature of the archipelago. Space based sensors are one possibility, but they don’t either provide the kind of continuous tracking that AIS creates. Switching it on and off also degrades OPSEC, as it shows when and where a mission has started. Just as when observing a black hole, you can glean things from observing what isn’t there in the same way as observing what actually is visible.

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The Finnish archipelago is a crowded place. Source: Cogitato via Wikimedia Commons

Without having insight in the finer details of how the Finnish Navy bridge crew works, I find it plausible that the report might have a point in that the risks of not being noticed might be underestimated and deserve more attention. However, as the Navy will never be able to maintain OPSEC and spend significant time with the AIS active, the way forward for the Navy is likely to be a bit more proactive with hailing approaching vessels on the VHF and using lights more liberally, as there always will be people on the seas that aren’t quite alert enough.

Another important detail is that as mentioned, in the archipelago as opposed to out on the Atlantic Ocean one can’t assume that all vessels in the area are of the size that they are equipped with AIS. Granted, the pleasure craft traffic is concentrated to good weather days in July, but there’s always the village fanatic who is out with his nets regardless of time of the year and weather. And if you keep a good enough lookout and have adjusted your speed appropriately that you will spot someone kayaking in time to take evasive actions, you will spot a Hamina-class vessel as well, AIS or not.