Wednesday, March 25, 2026

5 facts about the Gulf war that make it an energy and shipping conflict


From The Shipping Brief by Federica Maiorano

The conflict unfolding around the Strait of Hormuz is rapidly evolving beyond a conventional military confrontation.

What is emerging instead is something more consequential for global markets: an energy and logistics crisis centered on the Gulf’s infrastructure and maritime chokepoints.

The region sits at the heart of the global hydrocarbon system, and the escalation we are now seeing reveals how fragile that system can be when geopolitics intersects with physical supply chains.

Below are five structural realities shaping the conflict and its implications for energy and shipping markets.

1. Energy infrastructure has become a primary battlefield

One of the clearest signals from the conflict so far is that energy infrastructure is no longer a secondary target — it is central to the strategy.

Facilities such as Saudi Arabia’s Ras Tanura Refinery and the massive LNG export complex at Ras Laffan Industrial City illustrate the scale of what is at stake.

These sites are not just industrial facilities; they are nodes in the global energy system.

The Gulf region accounts for roughly:
  • ~20% of global oil supply
  • ~20% of global LNG supply
Disrupting even a portion of this capacity can quickly ripple through energy markets.

What makes this phase of the conflict particularly striking is how inexpensive the tools of disruption have become.
Drone strikes and asymmetric attacks can threaten assets that took decades and hundreds of billions of dollars to build.

This creates a profound imbalance: cheap weapons targeting extremely expensive infrastructure.

2. Shipping activity has effectively collapsed

The second front in this conflict is maritime.

The Strait of Hormuz is one of the most critical shipping routes in the world. Roughly 20 million barrels of oil per daynormally transit this narrow waterway, alongside large volumes of LNG and other commodities.

But in recent days, commercial traffic has dropped sharply.
Some maritime intelligence reports suggest very few international vessels are crossing the Strait, apart from Iranian shipping.

This disruption extends far beyond hydrocarbons.

Several other commodity supply chains rely heavily on the Strait, including:
  • aluminium exports from the Gulf
  • fertiliser feedstocks such as urea and sulphur
  • petrochemicals
  • other bulk commodities
The consequences are already visible across the shipping market.
War risk insurance premiums have surged, freight risk has increased dramatically, and many shipowners are reassessing whether the route is commercially viable under current conditions.

Iranian officials have further escalated tensions by warning that “not a single litre of oil” would leave the Gulf while attacks against Iran continue.

If enforced, such a strategy would effectively weaponize one of the world’s most important maritime chokepoints.
 


3. Storage and logistics constraints are creating a cascading crisis


A less visible but equally important dimension of the crisis is logistics bottlenecks within the producing countries themselves.

If exports are blocked, oil producers eventually face a simple physical constraint: they run out of storage capacity.

Tank farms fill quickly when production continues but tankers cannot load.
Once storage reaches its limits, producers have no choice but to shut in production.

Countries such as Iraq are particularly vulnerable to this dynamic because their storage capacity is limited relative to production levels.

Even where alternative export routes exist, they offer only partial relief.

Saudi Arabia can divert some crude through the East–West Pipeline, which transports oil to terminals on the Red Sea.
The UAE has a similar bypass route through the Habshan–Fujairah Pipeline, allowing exports to reach the Gulf of Oman.

But these pipelines cannot replace the full capacity of the Strait.
At best, they allow a fraction of normal export volumesto continue moving.

The result is a cascading supply problem: once exports slow, production reductions often follow.

4. Kharg Island is the strategic wildcard

Amid all the escalation, one location remains conspicuously untouched: Kharg Island Oil Terminal.

Kharg Island in the GeoGarage platform (UKHO nautical raster chart)
 
This small island handles around 90% of Iran’s crude exports and is one of the most strategically sensitive pieces of energy infrastructure in the region.

So far, the United States and Israel appear to have deliberately avoided targeting it.

The reason is straightforward: striking Kharg would likely trigger a far broader escalation.

Such an attack could provoke:
  • retaliatory strikes on Gulf energy infrastructure
  • a severe disruption to regional oil exports
  • a significant shock to global energy markets
In other words, Kharg Island represents a strategic red line.

As long as it remains untouched, there is still some containment in the conflict.
But if that line were crossed, the consequences for global energy markets could be profound.

5. The global energy system is structurally fragile

Taken together, these developments highlight a deeper structural reality.

The global energy system depends on a small number of highly concentrated infrastructure hubs and maritime chokepoints.

When those assets become exposed to geopolitical conflict, the system can be destabilized far more easily than many market participants assume.

Low-cost asymmetric warfare — whether drones, sabotage, or maritime disruption — now has the potential to:
  • damage critical infrastructure
  • halt shipping routes
  • destabilize commodity flows
  • move global prices
The Gulf conflict is therefore not just a regional war.
It is also a stress test for the architecture of the global energy and shipping system.

And the results so far suggest that architecture may be far more fragile than markets once believed.


 
Links :

Tuesday, March 24, 2026

GPS denied: time to upgrade


From Pulse by Mark Munsell, former Chief AI Officer of NGA


The Fragile Foundation of Modern Navigation

The Global Positioning System (GPS) is arguably the greatest dual-use technology ever developed.
It saves us trillions of dollars in wasted fuel and inefficient logistics.
However, our modern world is built on a system that is terrifyingly fragile, highly vulnerable to jamming, spoofing, and the existential threat of anti-satellite weapons.

Recent events prove this vulnerability.
On February 28, ships navigating the Strait of Hormuz started appearing on tracking screens in places they couldn't possibly be.
They appeared to be sitting on airport runways, parked on Iranian land, and clustered at nuclear power plants.
More than 1,100 commercial vessels had their navigation systems scrambled in a single day following US-Israeli airstrikes on Iran, bringing a waterway that handles a fifth of the world's oil exports to a halt.

A similar crisis unfolded months earlier in the Caribbean.
During a U.S. standoff with Venezuela, jammed signals caused commercial flights to experience severe GPS problems, resulting in a near-collision for a JetBlue pilot and forcing a cruise ship to navigate by charts and landmarks for three hours.

These are no longer isolated incidents.
Today, anyone can pull up independent tracking sites like gpsjam.org—which aggregates aircraft data to visualize daily GPS disruptions worldwide—and view a heat map of the globe bleeding red with active interference.

But conflict zones aren't the only risk.
In 2013, a truck driver with a $100 jammer accidentally knocked Newark Liberty International Airport's GPS offline just to hide from his employer's vehicle tracker.
This system is used by over 6 billion people, yet it could be blinded by cheap gadgets bought off of eBay (now illegal btw).

The Invisible Metronome

GPS was designed for military position, navigation, and timing in the 1960s and 70s.
Its signals travel 20,000 kilometers from space, arriving 100,000 times weaker than ambient noise.
This makes them easily overwhelmed by low-cost eBay jammers emitting stronger radio noise on the same frequency.

Crucially, GPS isn't just a map; it is the invisible metronome for the modern world.
The atomic clocks on GPS satellites synchronize cellular networks, timestamp billions of financial transactions, and regulate power grids.
Lose the timing signal, and our global digital infrastructure fundamentally breaks down.
We've wired the heartbeat of the global economy to a whispering radio signal from space.

Diverging Strategies: U.S. vs. China

The U.S. government has focused its response almost entirely on advancing military resilience measures like encrypted M-code signals and anti-jam antennas.
This does nothing for commercial pilots or global logistics networks navigating denied environments.
The U.S. defends GPS purely as a military asset.

Meanwhile, China has taken a radically different approach.
It has poured state investment into the BeiDou satellite system, which achieved full global coverage in 2020 and surpasses the U.S. network in size.
In parallel, China has built a deep bench of geospatial experts and backed BeiDou with a layered terrestrial architecture that includes a 20,000-kilometer fiber network and a national eLoran system.
By actively exporting BeiDou through the Belt and Road Initiative and achieving full-stack autonomy in domestic navigation chips, China is building an ecosystem with commercial and strategic leverage that will matter as GPS-denied environments become the norm.

Moving Beyond GPS 2.0

The private sector is beginning to field alternative positioning systems, but competing against “free” will require game-changing innovation, not just incremental improvement.
Inertial navigation systems are expensive and drift over time.
Satellite constellations that simply move GPS-like spacecraft closer to Earth carry many of the same vulnerabilities as the system they’re meant to replace.

Commercial alternatives must go beyond GPS 2.0 to address both resilience and new use cases that justify adoption on their own merits.
Remarkable new startups like EarthTraq aim to fill these gaps by providing new purpose-built constellations paired with low-cost, low-powered devices not dependent on any GPS constellations.
Other companies are actively using computer vision or radar to automatically determine positions with what I call "artificial intelligence dead reckoning." 
Powerhouse companies like Vantor and Niantic Spatial are going big on high fidelity photogrammetric digital models of the world for precision navigation in denied environments.
Other examples, Skyline Nav AI uses computer vision and deep learning to determine a vehicle's location in real time based solely on its surroundings.
Similarly, European startup Vydar uses onboard AI to match live camera feeds of the ground with offline maps, computing highly accurate coordinates even during a complete GPS blackout.
Daedalean AI is taking a complementary approach, building visual positioning systems that integrate seamlessly with radar and inertial sensors to operate in challenging conditions like fog or darkness.
All of these alternatives offer mission performance that GPS cannot and have great promise to supplement or replace it in a denied environment.

We’re all going to have to get used to a world without GPS.
The era of implicit trust in a single vulnerable satellite network is over.
If we want to safely operate autonomous systems and AI in the real world, we must develop higher-fidelity methods of positioning within the eternal reference frame that cannot be defeated by cheap eBay jammers.
It's time to make the system resilient, redundant, and reliable through alternate means to make autonomous AI-driven navigation a reality.

Monday, March 23, 2026

Shift in the Gulf Stream could signal ocean current collapse


The Gulf Stream ocean current carries warm water from the Gulf of Mexico up the US east coast
NASA’s Scientific Visualization Studio/Science Photo Library

From New Scientist by Alec Luhn
 
Models show that as the Atlantic Meridional Overturning Circulation gets weaker, the Gulf Stream will drift northwards.
There are signs that this is already happening, and a more abrupt shift could warn of more severe climate impacts

A gradual northward shift in the Gulf Stream has provided more evidence that the system of currents that keeps Europe warm is weakening.
What’s more, modelling suggests that any abrupt shift in the Gulf Stream could signal an imminent, catastrophic collapse in the ocean current.

The Atlantic Meridional Overturning Circulation (AMOC) is the flow of warm, salty surface water from the tropics to north-western Europe, where it cools and sinks, returning south along the ocean floor.
The part of this circulation running from the Gulf of Mexico up the US east coast to North Carolina, where it veers east into the Atlantic, is called the Gulf Stream.


Horizontal velocities responses. Credit: Communications Earth & Environment (2026)
 
The AMOC is expected to lose strength as the melting of the Greenland ice sheet dumps fresh water into the north Atlantic, diluting the dense, salty AMOC water and slowing the rate at which it sinks and flows southward.
Some research suggests that this is already happening, but scientists don’t have direct proof.
Now, a modelling study by René van Westen and Henk Dijkstra, both at Utrecht University in the Netherlands, has shown that a weakening AMOC would shift the path of the Gulf Stream so it follows the US seaboard further north before it veers into the Atlantic.
Moreover, the study finds the Gulf Stream has already shifted northward by about 50 kilometres in 30 years, according to satellite data.
“This is something we can measure,” says van Westen.
“So it is very likely that this reflects that the AMOC is indeed weakening.”
Reconstructions that estimate the AMOC flow rate based on historic sea temperatures suggest it has weakened 15 per cent since 1950.
But its actual flow has only been monitored by moored instruments since 2004, not long enough to say whether observed changes are natural fluctuations or a trend.
“Therefore, we are trying to come up with some alternative approaches, such as the Gulf Stream path,” says van Westen.
The model in the study represents the world in 10-kilometre pixels rather than the typical 100-kilometre pixels, allowing the researchers to track the bulge where the Gulf Stream is carrying masses of water.
The path of the bulge changes because of the Deep Western Boundary Current, one of the arms of the AMOC carrying cold, salty water southward along the seafloor.
This current normally flows down the coast of North America under the Gulf Stream, tugging it to the south.
As the AMOC weakens, so does the Deep Western Boundary Current, and the curve of the Gulf Stream gradually shifts northward.
However, 392 years into the simulation’s future, the Gulf Stream jumps more than 200 kilometres to the north in just two years.
Twenty-five years after that, the AMOC collapses.
Previous research has shown that such a collapse would drastically cool Europe; London could see cold snaps of -20°C (-4°F) and Oslo, Norway, could reach -48°C (-54°F).
 
Gulf Stream path in observations. Credit: Communications Earth & Environment (2026).

The modelling is an idealised scenario that does not suggest the AMOC will collapse in 400 years.
But it does suggest an abrupt shift in the Gulf Stream could serve as an early warning of an impending AMOC shutdown, the only such prior indicator we know of.
While it may be too late at that point to avoid AMOC collapse, Europe could prepare by insulating houses and finding more southerly places to grow food.
“There is now a very proper early warning indicator that actually goes off,” says van Westen.
“You can measure this very easily.”
But it’s unclear in the real world how long after a Gulf Stream shift the AMOC could collapse.
And projections of when the AMOC might shut down range from decades to centuries.
Dan Seidov, an oceanographer retired from the US National Oceanic and Atmospheric Administration, cautions that fresh water from Greenland could “hose” the AMOC at a different rate and in a different place from what the model assumes.
“How, when and why it may or may not happen is the big question,” he says.
“If it happens as is prescribed in the model, then the Gulf Stream can be a precursor and provide a warning signal.”
While the link between the abrupt shift and AMOC collapse will need to be corroborated by other models, this study provides more evidence the AMOC is already slowing, says Stefan Rahmstorf at the University of Potsdam in Germany.
“This slowing is occurring earlier than in the global warming scenarios,” he says.
“Climate models appear to underestimate the problem and thus potentially how soon an AMOC tipping point will be reached.”

Links :

Sunday, March 22, 2026

Squid, a new mobile navigation app compatible with the GeoGarage platform

 Squid on the AppleStore
 
The route-planning app used by Vendée Globe skippers.
Advanced weather forecasting, multi-model GRIBs, smart route planning—ultra-low data usage, even at sea.

The trusted weather routing app of the world’s top offshore sailors.
Squid is the mobile version of SquidX—the routing solution used by elite teams in the Vendée Globe, Route du Rhum, Transat Jacques Vabre, The Ocean Race, and many more.

That same level of professional performance now fits in your pocket.
From solo ocean racers to weekend sailors, Squid offers every sailor access to accurate multi-model weather data and smart routing tools—reimagined for speed, simplicity, and offshore use.
 
A brand-new version has just been launched: 
a completely redesigned interface, significant performance improvements, and new features in continuous development.

Key Features
  • Intelligent routing engine with roadbook tool
  • Cloud-based routing with multi-route comparison
  • Multi-model GRIB viewer (GFS, ECMWF, AROME, ARPEGE, GEM, NAM, and more)
  • Forecasts up to 10 days, with 1- to 3-hour intervals
  • Meteograms for multi-model comparison (wind & pressure)
  • Extensive database of polar charts (racing & cruising yachts)
  • Lightweight GRIBs optimized for offline use
  • Iridium GO!® compatible — designed for low-bandwidth environments
  • Custom map visualizations: contour lines, wind vanes, arrows, particles
Weather data : 
Wind, gusts, MSLP, precipitation, cloud cover, CAPE, humidity, temperature, surface currents, swell & wind waves. 
 

Squid is compatible with the nautical charts form the GeoGarage platform via some yearly subscriptions also available for Weather 4D Routing & Navigation on iOS / SailGrib on Android / NavimetriX multiplatform

 

Wind assisted propulsion on cargo ships