If the Banque de France holds physical in New York and sells it to JPMorgan (nothing moves) and then in Paris buys contract for physical from UBS, there will probably need to be physical gold that moves.
In all likelihood, Swiss gold held by e.g. a Gulf customer might be sold to Paris (nothing moves) and JPMorgan may entice Venezuela to take those contracts on its balance sheet (nothing moves). But if it’s a big trade, the price of delivering physical in Paris (or Genève) will go above spot in New York at which point it’s profitable for JPMorgan to take delivery, load up planes and physically ship gold.
To supplement this, there was an interesting situation in 2025 [0] where a financial signal developed and we saw physical gold flows from London to New York. A very similar mechanism; governments do something, price signal develops, gold starts flying around.
You wouldn't need many ships. The volume of a single shipping container is enough for 1300 tons of gold. Of course gold is extremely heavy, you'd need a specially built container to support that much gold, but the point is the storage space of any ocean going ship can comfortably carry the entire gold reserve of an entire country.
If you actually loaded gold into shipping containers and obeyed the weight restrictions, all the gold in the world would take up less than 8400 TEU, which would be considered a mid size cargo ship.
This actually happened in 1965. De Gaulle, the president of France at the time, sent the French Navy over to America and took their reserve gold back home. This prompted other countries to do the same and by 1971 America had switched from a gold standard to a fiat currency.
You're leaving out some really interesting context there. After the Great Depression the economic equilibrium the world settled into, with the Bretton Woods treaty, is that participating countries, which was most of the non-Soviet aligned world, would agree to base their currency's value on the USD.
That'd obviously give the US an immense amount of power, so in exchange the US would agree to make the USD convertible to gold at a fixed rate by other countries (as opposed to e.g. individuals). So the whole point here is that if the US tried to print a whole bunch of money to exploit our 'exorbitant privilege', countries would be able to take their now devaluing USD and exchange into a gold at a stable rate and make a whole bunch of money. So it was intended to be a self correcting system.
The problem is that the US did print a whole bunch of money anyhow, and when France and other countries said 'hey we'd like to convert our USD to gold' we just said 'nah' and defaulted on our obligations, bringing Bretton Woods to an end in 1971. That signaled the beginning of the modern completely fiat economic system, and led to some wild quotes from the time. For instance the Secretary of the Treasury under Nixon (who was president in 71) has a great quote of, 'The dollar is our currency, but your problem.'
---
It's critical to understand this history to understand what's happening today with countries increasingly seeking to replace the dollar. Many want something akin to Bretton Woods 2.0, but without any country being given a win button. And that's not so easy to devise!
Only fools like the management of Apple, Microsoft, and Google would lend money to the United States government. Government bonds have fallen 80% relative to gold in the past few years.
> Government bonds have fallen 80% relative to gold in the past few years.
I think most people would suggest the converse..... that gold prices have doubled over the last three years compared to virtually any stable western currency.
> Many want something akin to Bretton Woods 2.0, but without any country being given a win button. And that's not so easy to devise!
The hard part is getting countries to agree on one system. Coming up with a good one is easy. You can either do EU style governance where countries vote on policy or go hands off and anchor everything to crypto.
> hard part is getting countries to agree on one system
To put it bluntly, America ended WWII with a global nuclear monopoly and then only industrial base on the planet that hadn't been bombed into smithereens. That put it in a unique position to set the terms of the peace. The only party that came out with any comparable leverage was the USSR on account of its massive army and willingness to maintain a wartime economy that would have been untenable in the democracies of the West. (Absent the USSR, it's again unlikely Bretton-Woods would have emerged–the Soviet threat created an incentive to coöperate.)
More than that, the end of WWII saw American complete its then priority of decolonization. That meant there were lots of newly created countries, not quite peacefully but not at the level of violence that usually accompanies new-country formation (with obvious exceptions, e.g. Partition and Israel/Palestine), that could be wooed with riches and ideology.
The alternative that was the ICU with an international reserve would punish surplus nations and help deficit nations. A Bretton Woods 2.0 thus would be advantageous to the US while neutralizing much of the advantageous the EU and China have as export based economies.
India brought several tonnes back from London. Approximately 250T was brought back in 100% cases it was brought from totally ordinary cargo planes. From what I have heard, hardest part of securing customs exemptions at port of entry in India.
Gold is heavy sure, but its $/weight value is still much higher than basically any other cargo - the plane vs ship choice would be even more weighted towards the plane with gold than with most other cargo.
More detail: at current prices gold is $133k USD per kilo - at that price transport costs would be such a tiny fraction of the value of the cargo that it wouldn't make any sense to pinch pennies - you'd want to go with the absolute fastest, safest option.
High-end enterprise Xeon processors are worth more by weight than gold but Nvidia H200 processors are worth less. The Intel chips are worth 3-6x the Nvidia chips.
I’ve found a few references for air but none for recent (2022-2026) sea movements yet. This article talks about illicit gold concentrates moving by sea but notes:
“In focussing almost exclusively on gold bars, jewellery, and high-grade recycled gold (over 40% purity), all of which generally travel by air, analysts have tended to disregard the maritime space as a significant arena for illicit gold flows (LBMA, 2022[9]).”
The Hong Kong gold vault stores at the airport, not the harbour:
“ Half of the world’s population, including those of China and India, lives and can be reached within five hours if the metal is loaded on a plane and sent from the Hong Kong airport”
> “Half of the world’s population, including those of China and India, lives and can be reached within five hours if the metal is loaded on a plane and sent from the Hong Kong airport”
This makes it sound like emergency delivery of gold is important. “Quick, we need to get 20 tons of gold to Nepal, stat! Go go go go go!”
No; but the volumes are tiny and the cost of freight is not very high. If I were talking about moving gold I would expect it to be flown because the risk of piracy would be too high. It is easier to plan, secure and monitor a flight.
> is there any definitive evidence of the actual transport mechanism?
I can tell you from first hand experience that moving high value items isn't as exciting as you'd think.
ULDs are the standardized shipping containers of the sky. You can rent ones that have an inner armored layer and tamper evident seals. They fly as commercial cargo, usually on the flag carrier airline if its a government load. No special rituals or armed guards. Shipments are broken up so the loss of a single aircraft is at most $5 or $10 million.
There are some highly specialized aircraft that transport full loads but they tend to be closer to the supply side, moving bulk gold or diamonds from remote mines for processing.
Cash is the interesting exception (most non-US currency is produced by commercial printers) where a country will send its military to go pick up one big shipment.
If the Banque de France holds physical in New York and sells it to JPMorgan (nothing moves) and then in Paris buys contract for physical from UBS, there will probably need to be physical gold that moves.
In all likelihood, Swiss gold held by e.g. a Gulf customer might be sold to Paris (nothing moves) and JPMorgan may entice Venezuela to take those contracts on its balance sheet (nothing moves). But if it’s a big trade, the price of delivering physical in Paris (or Genève) will go above spot in New York at which point it’s profitable for JPMorgan to take delivery, load up planes and physically ship gold.