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'Shadow fleets' and sabotage: are Europe's undersea cables under attack?

jl6

> It then carried on across four undersea fibreoptic cables, three of which registered failures around the time the ship crossed them. The ship was suspected by Finnish authorities of having dragged its anchor to damage the cables and was escorted into custody.

The ship in this case was the Eagle S, estimated to be costing the owner €14,500 per day in running costs while impounded.[0] If the owners abandon the ship, that's a ~$30m asset forfeited, which could be used to compensate the cable owner for the damage.

How much does it cost to fix a broken cable? Here's one estimate saying $2m[1].

Monitoring cable breaks + rapid reaction + police investigation + asset seizure + criminal prosecution = increases the cost of this attack.

[0] https://en.wikipedia.org/wiki/Eagle_S

[1] https://subtelforum.com/8m-to-restore-subsea-cable-services/

jeroenhd

The problem with that math is that you can't catch them all. Russia has been gauging Europe's response by attacking cables close by, but there's no reason to believe they won't strike other strategic targets that are harder to monitor in future.

The current approach, to zig-zag over a cable with the anchor, is extremely obvious, but they could just as well have an entire fleet of ships just casually drag their anchor when passing over their targeted cable until one of them catches it. With a bit of planning, a large number of unrelated ships could be over one or more cables at the time the cable snaps, making it rather difficult (and therefore expensive) to figure out which ship is behind the attack.

The value of their crude oil fleet is also rather diminished by sanctions now that they can't sell as much crude oil as they could before.

For this specific attack, the ship being forfeited would be a net win. However, for the many other sabotaged cables, that's not happening. I think Russia gladly pays a couple thousand euros a day to sabotage European communications for weeks, as well as trick European/NATO fleets to show themselves and demonstrate how they behave when they're looking for trouble.

ethbr1

The counter to this is:

1) Rapid identification and localization of breaks, so military/police forces can be dispatched to the area.

2) Continuous deployment of MQ-9B SeaGuardian or HALE UAV platforms around shallow cable runs to locate and id dark ships, who would also be running nav beacons before and after.

3) Low-earth-orbit persistent sensing networks (e.g. what's now called PWSA [0]) with ship id'ing sensor packages.

As parent notes though, the lynchpin of this is inverting the cost:benefit ratio to be unfavorable, by raising the likelihood that ships will be detained and ultimately seized.

Even oligarchs don't like to light money on fire.

[0] https://spacenews.com/space-force-preparing-for-the-age-of-p...

deepsun

1) is just hard. A lot of crime would not happen if we could just rapidly identify and localize it.

Braxton1980

>Even oligarchs don't like to light money on fire.

Russia's war with Ukraine is not profitable for Russian oligarchs or Russia itself yet it continues

rendall

Soon, and it's starting to happen as we read this, Europe will beef up and smash Russia for this kind of nonsense.

Braxton1980

Countries spend money on war, look at Russia and Ukraine.

pimlottc

The losses from a broken cable are more than just the cost of repair.

dmix

How are running costs an asset forfeiture?

jl6

They are not. The owner doesn’t want to bear the running costs (and possibly also other ongoing consequences), so they’ve threatened to abandon the ship. Separately, the cable owner has initiated litigation that could see the ship seized to pay damages.

throwaway48476

The solution is to require ships to be inspected and registered if they want to sail through Denmarks territorial waters.

close04

They don't need to sail through territorial waters. The Baltic is a shallow sea (~55m deep on average, 460m at the deepest point) and an anchor chain can be 200-300m long. So dragging an anchor on the bottom of shallow international waters provides just the right combination of plausible deniability and an environment with low legal repercussions.

This is one of the reasons it doesn't happen in the Atlantic. By the time you are out of territorial waters, in general the required anchor chain length puts the incident outside of any plausible deniability.

throwaway48476

If they want to sail in or out of the Baltic it's through Denmark.

A ship that leaves port to cut a cable and then back to the same port loses all plausible deniability.

roenxi

If the headline is a serious question, it'd be helpful to have an #incidents/year chart in here somewhere. The article includes "According to the Recorded Future analyst Matt Mooney, between 100 and 200 cable outages occur every year" but it is easy to miss if someone doesn't go looking for the statistic.

jeroenhd

Accidental cable cuts happen all the time, but there is clear proof of intentional sabotage for some of the recent cuts.

I believe this is akin to the US flying obvious spy planes over countries at altitudes they can't stop them at even if they wanted to: a show of force, likely unrelated to how a full-on military conflict would work.

If Russia wanted to make these attacks look like an accident, they could've sent fishing ships or at least pick more believable anchor points.

benterix

And the next line says: " Yet, Mooney said the pattern associated with the cable fault events that have occurred in the Baltic Sea in the past 15 months makes it unlikely that none of them were intentional."

roenxi

Intentional can mean a lot of things. Some plane crashes are caused by suicidal pilots. I'm sure there is the occasional captain or crew member who just goes postal and decides to take his anger out on infrastructure.

This sounds like a situation where even if it is deliberate enemy action the appropriate thing to do is ask them to stop. Maybe invite the Chinese diplomats in, tell them to stop, then expel the embassy for a week and then allocate some extra budget to cable repairs.

If we're talking about - and I quote the article - a "sabotage campaign aimed at destabilising Nato allies" then it'd look more like the Nord Stream explosions; big showy events where the US looks so suspicious that we can almost dismiss their involvement because that'd be too obvious. Random cable cutting is a bit too weird in that it doesn't sound like it achieves anything and seems too subtle an attack to have a motive.

lawlessone

> invite the Chinese diplomats in, tell them to stop, then expel the embassy for a week and then allocate some extra budget to cable repairs.

It isn't China though its Russia, it was Chinese company that owned the ship but it was a Russian captain and it had just left Russia.

benterix

Destroying NS seemed significant at the time but not anymore - we've drastically reduced dependency on Russian gas so it makes no sense to build/open new infra for that. And even if the war ends, Europeans will be ware of sending their money to a country that may use it against them.

ceejayoz

> This sounds like a situation where even if it is deliberate enemy action the appropriate thing to do is ask them to stop.

Do you moonlight as a strategist for the Democratic party?

bongoman42

> This sounds like a situation where even if it is deliberate enemy action the appropriate thing to do is ask them to stop. Maybe invite the Chinese diplomats in, tell them to stop, then expel the embassy for a week and then allocate some extra budget to cable repairs.

LOL. This is hilarious. Its kind of like someone who has never experienced gang warfare stepping into an inner city turf asking opposite sides to take their grievance to cops.

jajko

Yet NS was done by Ukrainian ragtag group (unless there is some new development that I missed on the case), well within the rules of war, not that anybody actually cares about them anymore. And its destruction was a good strategic move for whole Europe, otherwise Germany would be dragging their feet forever. We're happy to do business with almost anybody but if some state keeps stating how it will wipe us out with nukes then no, you don't deserve our money and go f*ck yourself.

Throwing away diplomats for a week, not sure what that would cause, probably 'meh' and continuing if the effort is intentional. Its not like diplomats actually make any serious decisions, they just parrot official policies.

Sharlin

I'm Finnish. I don't recall ever hearing about a cable being cut in the Baltic Sea before 2022, and based on quick Googling, cannot find any reports of such incidents either. And now they occur several times per year. Once is happenstance, twice is coincidence, three times is enemy action.

INTPenis

The finnish security police themselves have said that these cuts happen about 200 times every year without any suspicion of sabotage.

My personal opinion so far is that this whole thing is teetering between media frenzy and actual issue.

Edit: Have to correct myself. Googling now it seems all traces of this statement have been scrubbed, and instead I find that the International Cable Protection Committe (ICPC) claim about 200 cable issues a year WORLD WIDE.

So maybe the Finnish security police had misspoken and have now retracted this statement from all media.

Either way, I have worked with internet since 2004 and I remember as early as 2004 dealing with companies in Sweden who had boats and other equipment just to install and maintain cables across the baltic and atlantic. It's something that requires non-stop maintenance, regardless of the security situation in the world.

One also has to ask if it's productive to cut these cables when 1) it disrupts nothing on a grand scale, and 2) if it were to disrupt anything it also means they cannot perform other attacks.

Sharlin

Hah, yes, there are definitely not 100 to 200 breakages in the Baltic Sea alone :D

tucnak

> My personal opinion so far is that this whole thing is teetering between media frenzy and actual issue.

Welcome to hybrid warfare! This is the point.

diggan

> I'm Finnish. I don't recall ever hearing about a cable being cut in the Baltic Sea before 2022

I'm Swedish, if that matters, and recall reading about (accidental) cable breakages all the way back to at least 2010 sometime. As mentioned elsewhere, there are between 100-200 cable breakages annually

> Do cables break?

> Yes! Cable faults are common. On average, there are over 100 each year.

> Unintentional damage from fishing vessels and ships dragging anchors account for two-thirds of all cable faults.

https://blog.telegeography.com/what-happens-when-submarine-c...

It seems like the media have ramped up reporting on cable breaks, because of the context, but seemingly none of them have been confirmed to be intentional, at least as far as I know. But I agree that it seems highly suspicious, also the recent water-supply sabotage on Gotland seems related to this all (https://www.aftonbladet.se/nyheter/a/Vz2em4/misstankt-sabota...)

Sharlin

> As mentioned elsewhere, there are between 100-200 cable breakages annually

World wide. A bit different from Baltic Sea only.

rixed

You've never heard about it because it's not newsworthy.

You should rather wonder why do you hear so much of it now.

Sharlin

There's an obvious selection effect, yes. But it is interesting that no news or technical reports or anything can be found about any earlier breakages.

nmeofthestate

NATO sent a flotilla of ships to patrol the Baltic off Finland, in response to damage to undersea cables. One would hope (!) that was based on a genuine problem existing an not just a media-driven misrepresentation of normal levels of cable damage.

null

[deleted]

dghughes

An undersea cable between Newfoundland and Nova Scotia has also been cleanly cut. Twice.

https://www.cbc.ca/news/canada/nova-scotia/bell-subsea-fibre...

Havoc

That does seem to be the new Cold War of sorts. Attacks that are indirect and easier to deny than kinetic attacks

throwaway48476

Russia has been waging a hybrid warfare campaign against Europe for a while now. Of course Europe is still in denial.

jeroenhd

Europe doesn't want an armed conflict with Russia. Even if Europe would be willing to sacrifice as many people in a conflict as Russia has, they'd still be up against a megalomaniac dictator with nukes. Real victory in a traditional war against Russia is unattainable. Same with China, or the US, or possibly India; the people in power are willing to look crazy enough to choose nuclear armageddon as a last resort.

And it's not like Europe isn't fighting back. European intelligence has been deep inside Russian networks since before the first invasion of Ukraine. From the European side, the invasion of Ukraine is a proxy war, with billions of euros spent on fighting Russia, while to Russia the war is a normal invasion with Russian (and now North Korean) troops on the ground.

The way Europe (except for Ukraine, of course) is fighting Russia mostly benefits Europe, as far as I can tell. Most of Europe's losses, so far, have been economical. Switching to a war economy to defend against Russia would probably cost more and be less effective. Until Ukraine falls, I don't see why Europe would want to change that deal.

throwaway48476

>Real victory in a traditional war against Russia is unattainable.

This is very wrong. Anything is possible, it's just a matter of political will.

The most likely scenario is russia is pushed to the brink and collapses internally like 1917 and 1990. Then Russia balkanizes along ethnic lines, like 1917 and 1990.

pavlov

Unfortunately Russia didn’t balkanize in 1990. The largest Soviet republic became the Russian Federation and kept its borders.

The world today would be a much safer place if 1990 Russia had split into about six independent states, each comparable to Kazakhstan or Ukraine. Hopefully that will eventually happen when Putin is gone. Imperial Russia should cease to exist like imperial Austria did. It has been a great source of misery throughout the centuries.

kimixa

Western Europe still has a massive manpower advantage, before you even look at investment and . If things develop to the level where the "comfortable city dwellers" in Europe is truly threatened I don't see Russia as being anywhere near the victor (though you're correct that in that case there won't be a "victor" so much "Might Lose A Little Less"). But the goal is to push up to that limit but no beyond, at least for now.

I don't think many people are actually nationalistic zealots who want to eliminate other countries so long as theirs is technically still existent, as even a king of ashes won't have a great life compared to a mid-range billionaire today.

arcbyte

> a megalomaniac dictator with nukes

I'm not alone in believing that this alone is reason enough to risk everything. A threat to freedom anywhere is a threat to freedom everywhere.

emptysongglass

> And it's not like Europe isn't fighting back. European intelligence has been deep inside Russian networks since before the first invasion of Ukraine. From the European side, the invasion of Ukraine is a proxy war, with billions of euros spent on fighting Russia, while to Russia the war is a normal invasion with Russian (and now North Korean) troops on the ground.

This is flatly wrong and gives far too much credit to Europe. The US had to shake Europe and Ukraine awake to the impending invasion of Ukraine. And I say this as an EU citizen.

nmeofthestate

The EU just announced a series of financial measures designed to support a massive level of re-armament by member states. I don't think we are in denial. Whether we can effectively respond is a different question.

throwaway48476

Rearmament is stupid. For every $1 spent destroying Russian equipment it's equivalent to $10 not spent on deterrence over the next 10 years. The only thing more expensive than a war is an arms race.

consp

It's also a way to subsidize your own country by subsidizing the arms industry. Pretty much what has happened in the US in the past years (pretty much all "gifts" are subsidies of the arms industry).

edouard-harris

Rearmament is deterrence. Unless you have a big enough stick, you can't deter anything.

ethbr1

The combination of both is usually optimal.

- Investing in deterrence is cost effective... up to a point.

- Directly sending Ukraine arms is cost effective... up to a point.

Right now, it's fair to say that (relative to Russia) Europe has been underinvesting in defense for a couple decades.

Good news: they seem to have recognized this and invested in recapitalizing their industrial defense base.

Bayart

It's not just Russia we need to be weary about. America needs to be guarded against.

layer8

Several of the EU sanctions explicitly state as a rationale that they are in reaction to Russia’s hybrid activities against the EU member states.

p2detar

It's not in denial, rather Kissinger's problem seem to not have been solved.

Henry Kissinger: "Who do I call if I want to call Europe?"

The irony of Trump being in power is that this might just happen during his term. I really hope so.

qwertox

If I were a bad actor, I would position a sub at some location over a cable, sabotage the cable at a far away point, and while the cable is unusable, I'd install some kind of splitter. Then again, I'd probably have nowhere to collect the data to.

siliconc0w

Easy solution- seize any tanker coming from a Russian port. Revoke all insurance or bullshit maritime chicanery that allows hiding the beneficial owner.

Why even have sanctions if you don't enforce them.

knowitnone

I mean, they can ban ships from certain nations from entering - sink them if they do.

anovikov

Stupid question - why not just protect cables with anchored mines? Of course, publicly declaring the minefields.

jeroenhd

Laying a mine field across the whole length of major waterways probably isn't a very good idea. Plus, maintaining a mine field and preventing innocent deaths would probably cost more than the inconvenience and monetary damages of repairing the broken cables.

0_____0

Congratulations, you have herein achieved the pinnacle of the "HN: why don't we just X" format.

grayhatter

You seem to have the mistaken impression that booby traps aren't horribly problematic.

Would you advocate the border control should point guns at anyone who crosses the border? Or is that a needless risk to the safety of humans?

I'd ask you to consider for a moment, exactly what is going to happen to that mine? I assume you thought it would damage or destroy any anchor dragged across the cable? Well it's really hard to predict how much damage it would cause but lets assume it works exactly as you hope and say it only destroys the anchor chain of the boat. What if there's a storm, and that ship can't anchor safely, but because it's run by incompetent, or evil people they don't care, and try to park near another ship crash into it. Both ships sink and a bunch of innocent people on the ship that just happened to park in the wrong place, die. That's assuming all the people on the "evil ship" were involved and weren't just hired to work delivering cargo.

You admitted it was a stupid question, but I'd like to suggest you should avoid defaulting to suggesting death and destruction. A better stupid question would be "why can't we armor the cables" instead of "why can't we hurt other people"

anovikov

A mine can't harm the anchor, but to drag the anchor, the ship must cross the minefield first.

What's going to happen? The ship will sink. In practice, that will either force Russians to sweep the mines thus attracting too much attention, or to give up on this idea of damaging cables.

It doesn't matter if people are directly involved. When a bunch of crews will die... well nothing will happen because for shipowners they are entirely disposable. But loss of ships will prompt shipowners to be extra careful to where the take orders from.

grayhatter

I wonder if there's a word for killing or harming people who are bystanders to try to change the behavior of some other person or some group.

pmontra

For all the length of the cable? Anyway, ships must let have routes to pass over those cables or we would partition the seas into small patches. Any ship passing over a cable between two mines can cut it.

Edit: or do you mean mines anchored to the cable on the sea floor? That would make it easier to kaboom the cable instead of cutting it.

epoxy_sauce

Seems like a massive hazard if a natural thing severs a cable and requires maintenance. Plus the removal at some point, presumably. Would suck for true accidents to have human lives on top of the damage.

I imagine there must be some other deterrent measure but drawing a blank. My brother was the navy man...

pjc50

The Baltic sea is full of civilian traffic!

SanjayMehta

Maybe it was a small group of drunk civilians on rented yacht?

https://www.wsj.com/world/europe/nord-stream-pipeline-explos...

FirmwareBurner

Would European nations having big fleets of submarines patrolling the waters reduce the chances of such sabotages?

zabzonk

Do you know how long these cables are? How many subs do you think you would need? Actually, surface ships would probably be more effective, but you would still need infeasible numbers of them.

croisillon

good thinking, which doesn't refrain the cops to driving rounds every 5 minutes in every pedestrian zones of the city

ethersteeds

Good thinking, which doesn't make the size of the Baltic Sea comparable to the size of a city, nor the costs of a fleet of cars with a single driver comparable to the costs of a fleet of ships with full crews.

It's tempting to say "if it's such a problem why don't they just monitor better?", but the ocean is vast.

zabzonk

i don't know about your city, but doesn't happen in any in the uk.

openasocket

Submarines aren't really well suited for this. You want something that can search and monitor over a wide area, and then the ability to intercept and potentially search/seize a suspicious vessel. The primary attribute of submarines is stealth, which is not relevant here.

What you want is a combination of maritime patrol aircraft and offshore patrol craft. Maritime patrol aircraft (helicopter, fixed wing aircraft, UAVs) are equipped with surface search radar and other sensors that enable them to monitor a wide area. The patrol craft are also fitted with radars and sensors, and can also move to intercept a suspicious ship. A helicopter could also potentially be used for intercept

someothherguyy

and look for what? ships with lines out? then do what? they already track ships.

https://en.wikipedia.org/wiki/Automatic_identification_syste...

mschuster91

Many ships intentionally turn off AIS, partially because there is barely any enforcement.

jeroenhd

I refuse to believe that AIS is the only way ships are being tracked. I think it's probably more likely that nobody is using their military intelligence to track fishing boats.

ohgr

No. They just need to capture or sink one caught pulling cables up.

This is only effective because there are no real consequences for it.

escapecharacter

I'm still praying for the future of trained whale-on-whale submarine cable offense/defense action.

epoxy_sauce

escapecharacter

I'm aware of the dolphins. It's become an in-joke among friends that the Crimean invasion started to get the military dolphins back for the cable attacks.

However, dolphins don't have as much depth capacity as other whales. I'd choose sperm whales for this, if they were trainable: https://en.wikipedia.org/wiki/Physiology_of_underwater_divin...

Cthulhu_

Maybe, but the Gulf of Finland alone (where the incidents with the Eagle 2 occurred) is 30.000 square kilometers; the amount of ships (or planes etc) and coverage you need and the associated cost is huge.

I mean putting an officer / escort on board of each ship to make sure they're not doing anything weird would be an option, but I'm fairly sure that's against international law or anything. The issue is also that these are international waters - the Eagle went right through a narrow corridor of international waters - where it's a bit of the wild west.

Polizeiposaune

There's a long-standing requirement at major ports that a local harbor pilot be on board to guide ships on their way in or out of a harbor. Requiring an observer on board when transiting areas with a concentration of critical underwater infrastructure seems at least conceptually similar -- though the logistics of making it happen would be very different.

lithos

How would that work. You're not going to sink the ship without an environmental disaster.

ratg13

I would think offering rewards for information could be a good deterrent.

It takes a decent amount of coordination, equipment, and crew to pull off these missions.

I imagine many people on these ships aren’t getting paid that great.

By offering levels of rewards for information about what organizations are being used to funnel money and equipment into this, it might help bring some level of prosecution, as well as make the missions more difficult to operate as there will be a lot less trust.

tucnak

> It takes a decent amount of coordination, equipment, and crew to pull off these missions.

They're dragging anchors on the marine floor; all coordination, equipment and crew are already there as a medium-sized fishing vessel is perfectly sufficient for this job.

aaron695

Yep, Russia is risking it's $80 billion per year in oil sales shadow fleet to cut cables that haven't once caused HN users to lose their porn for even a day.

Cool story bro's keep smoking it up now it's legal along with big pharma, what could go wrong.

These ships can barely stop their anchor safety equipment from rusting out but they are full of secret spy stuff to cut cables. I think once someone saw a keyboard with Russian letters on it even.

Better question is Russia really getting Ukrainians to suicide bomb recruitment stations? - https://www.washingtonpost.com/world/2025/02/07/ukraine-recr...

I don't think they are, Europe spreads this disinformation as lame wanna-bes pretending they are also under attack, Russia is burning down their Ikeas.

To avoid pay them, is quite laugh out loud - "remotely detonates the explosive early — to kill the witness and also avoid paying them"

piva00

You have a pattern of writing shallow dismissals (including deflections to other topics) about anything aligned with the current US administration grievances, are you one of the true believers?

regularjack

I bet a few years ago you were also convinced Russia would never invade Ukraine.