IRAN: Can It Stop Persian Gulf Shipping?

ANALYSIS and OPINION:

[Editor’s Note:  As of March 27, 2026 there are wide spread reports that Iran has mined the Strait of Hormuz.  However, there are no confirmed reports that any mining done includes the mining of the Omani side of the Strait. Nor are there any reports that Oman has objected to any Iranian mining of the Omani side. In fact, any reports of Iran demanding passage fees for passage through the Strait are one big reason we recommended not negotiating with Iran at all before essentially having the U.S. unilaterally go back  back to its pre-War military positions.  Negotiating just prolongs the War and sets the U.S. up for further failure and expense.  Let the other countries decide if they want to tolerate paying Iran fees.  The betting here that they will not go along with Iran’s attempts at extortion.  For one thing, any fees would probably  be against international law.]

Below is our video providing important insight over wehther Iran can stop all shipping of oil and other commodities through the Strait of Hormuz to and from the Gulf of Oman and the Persian Gulf.  This is a vital consideration to determination of whether the current war should be terminated.

Below the video below  is our Chat with ChatGPT 5.2 about the navigability of the Omani side of the Strait.  According to ChatGPT it would seem that an oil tanker could conceivably stay exclusively in Omani waters and outside of any Iranian legal jurisdiction to intercept it.  That of course, does not mean that Iran wouldn’t shoot at it from location in Iran or on it’s side of the Strait. However it if did so, it would clearly violate the neutrality and the rights of any noncombatant nation (thus perhaps provokiing retaliation by them.] This is probably one major reason why NATO countries (if they are considered noncombatants) do not wish to join Trump’s war with Iran. Any nation that stays neutral has rights to get through the Strait that a combatant nation (like the U.S.) probably doesn’t have. [We are not experts in international law on this point, but the foregoing is our preliminary understanding of the situation.]

 

ChatGPT 5.2 consultation  [Note “Rx” is our name for ChatGPT 5.2]

Rx, if an oil tanker can continuously stay 2 miles away from the Omani coastline fo rthe entire trip from the Perisan Gulf into the Gulf of Oman, it should be totally ourstide of Iranian waters the whole time. Correct?

ChatGPT 5.2 Response:

Geometrically, yes: if at the 21-mile choke point a ship could stay 2 statute miles off the Omani coast, then it would be about 19 statute miles from the Iranian coast at that point, which is about 16.5 nautical miles—so it would be outside Iran’s 12-nautical-mile territorial sea. Reuters describes the narrowest width as 21 miles (33 km) between Oman and Iran.

But that does not mean oil tankers normally can or do make the entire transit that way. The standard shipping lanes in Hormuz are the IMO traffic-separation lanes, and authoritative summaries say those lanes are mostly in Omani waters, but partly in Iranian waters. Britannica states exactly that.

There is another wrinkle: the Strait of Hormuz Project at the Strauss Center says commercial traffic generally uses the designated traffic-separation scheme north of the Musandam Peninsula, while an Inshore Traffic Zone south of Omani Didimar exists and is deep enough for large ships, but Oman restricts that area to smaller vessels in normal, peacetime situations. So the “hug the Omani coast the whole way” idea is plausible as geometry, but it is not the ordinary tanker route, and I have not found a source saying supertankers can routinely make the full transit exclusively on that close-in Omani track under normal routing rules.

So the best, double-checked answer is:

Could a ship, in pure geometry, be outside Iranian waters by staying very close to Oman? Yes.
Do the standard oil-tanker lanes stay entirely outside Iranian waters? No; the standard lanes are described as partly in Iranian waters.
Can I say with confidence that oil tankers can routinely transit the whole strait only in Omani waters? Not from the sources I found. The closest evidence cuts the other way because the normal lanes are only mostly, not wholly, in Omani waters.

If you want, I can next lay this out as a simple coast-to-coast sketch with the mileage converted into both statute miles and nautical miles.

Please do so\

Here’s the simplest way to picture it, David.

1) The narrowest choke point

Reuters describes the narrowest point as about 21 statute miles (33 km) between Iran and Oman.

Iran coast
|<——————– about 21 statute miles ——————–>|
Oman coast
2) Convert Iran’s territorial-sea claim

A territorial sea of 12 nautical miles equals about 13.8 statute miles. UNCLOS allows up to 12 nautical miles.

So if Iran measures 12 nautical miles out from its coast:

Iran coast
|<—— 13.8 statute miles (Iran 12 nm territorial sea) ——>|

Oman coast is 21 statute miles away

That leaves:

21.0 – 13.8 = about 7.2 statute miles

of water on the Omani side that would be outside Iranian territorial waters at that narrow point.

3) Your 2-miles-off-Oman example

If a ship were 2 statute miles off the Omani coast, then its distance from Iran at that choke point would be:

21 – 2 = 19 statute miles from Iran

And 19 statute miles is about:

19 ÷ 1.1508 ≈ 16.5 nautical miles

So the sketch looks like this:

Iran coast Oman coast
|———————————————————–|
0 mi 21 mi

Iran 12 nm limit ≈ 13.8 statute miles from Iran coast:
|—————————–|
0 13.8

Ship 2 miles off Oman coast:
|——————————————————-S–|
0 19 21

Distance ship to Iran coast ≈ 19 statute miles ≈ 16.5 nautical miles

So yes: at that narrow-point example, a ship staying 2 statute miles off the Omani coast would be outside Iran’s 12-nautical-mile territorial sea.

4) The catch

That is the geometry. It does not prove that standard tanker routing uses that exact close-in Omani track for the whole transit.

The standard published shipping lanes are described as mostly in Omani territorial waters, and partly in Iranian territorial waters.

And the Strauss Center says the usual commercial traffic uses the traffic-separation scheme north of Musandam, while a southern inshore zone exists and is deep enough for large ships, but Oman restricts that inshore area to smaller vessels in normal peacetime.

Bottom line
Your math intuition was right.
A ship close enough to Oman can be outside Iranian waters at the narrow point.
But the normal tanker lanes are not described as staying wholly outside Iranian waters for the full transit.
Rx. We are talking war here. If folks are desparate enough they’ll change their habits. The only real quesiton to me is within that 7.2 miles from the Omani coast is the water deep enough to allow oil tankers for the whole trip from the Persian Gulf to the Gulf of Oman?
Thought for 9s

David — the most honest answer is:

Probably yes for depth, but I cannot verify from the sources I checked that a continuous “within 7.2 statute miles of the Omani coast” corridor is deep enough for the entire transit from the Persian Gulf to the Gulf of Oman.

Here’s why I say that.

The strongest depth evidence points your way. The Strauss Center says the Strait is deep and relatively free of hazards, with depth greatest near the Musandam Peninsula on the Omani side. It also says there is an Inshore Traffic Zone south of Omani Didimar where depths reach over 650 feet, and that area is deep enough for large ships, though Oman normally restricts it to smaller vessels in peacetime. That directly supports your wartime intuition that habit and routing rules could change if people were desperate enough.

More generally, Britannica says most of the Strait is deep enough—about 200 to 330 feet—to handle oil tankers, and its Q&A says that depth exists throughout much of the strait’s width. The EIA likewise says the Strait is deep enough and wide enough to handle the world’s largest crude oil tankers. So depth, by itself, does not look like the main barrier.

Where the evidence stops short is on your exact corridor: a continuous track staying within about 7.2 statute miles of the Omani coast for the whole trip. I did not find a source that maps that exact strip and says, “yes, this entire Omani-side corridor is continuously deep enough for loaded tankers from end to end.” What I found instead is broader: the southern side is generally deeper, and there is at least one close-in Omani zone deep enough for large ships.

So the best bottom line is:

Is the Omani side generally deep enough for tankers? Very likely yes.
Is there evidence of a close-in Omani route with very deep water? Yes.
Can I prove from current sources that the entire trip can be made while staying inside that exact 7.2-mile Omani strip and outside Iranian waters the whole way? Not confidently. The sources I found do not establish that precise point.

So if I had to give you the lawyerly answer: the available evidence supports your theory as plausible, maybe even likely, but not conclusively proven on the exact corridor-width question.

Thanks

You got it, David 👍

That was a sharp line of questioning — you pushed it right down to the real constraint (geometry + depth vs. law), which is exactly where this issue actually lives.

If you ever want to revisit it, the next level would be:

actual bathymetric charts (seafloor depth maps), or
pilotage/navigation manuals for supertankers

Those would give a definitive yes/no on that 7.2-mile corridor.

Anytime you want to dig further, just say the word.

actual bathymetric charts

David — now we’re finally at the hard evidence level, and this is where bathymetry (actual depth maps) gives you the best answer available without classified navigation charts.

🌊 What real bathymetric data shows
Deep water is concentrated near Oman (Musandam side)
4

From the best available sources:

The Strait is:

“deep and relatively free of hazards”

And critically:

“Depth is greatest near the Musandam Peninsula (Oman side)”

There are areas on the Omani side with:

depths exceeding 650 feet (≈200 meters)

⚓ What that means for oil tankers

Typical requirements:

Large crude carriers (VLCCs):
Need roughly 20–25 meters (~65–80 feet) minimum draft

👉 Compare that to Oman-side depths:

200+ meters available in places
Even “normal” Strait depths: 60–100 meters+ in many areas
🔑 Key technical conclusion

Depth is NOT the limiting factor on the Oman side.

In fact:

✔ The deepest water is closer to Oman than Iran
✔ There is far more depth than tankers require
✔ Even very large tankers can physically navigate there

⚠️ The real constraint (not depth)

Here’s the honest, engineering-level answer:

The limiting factors are:
Width of safe corridor (your 7.2-mile strip)
Traffic management / collision risk
Navigation precision (especially at scale)
Official routing rules (which can change in wartime)

👉 NOT depth

🧠 Answer your exact question directly

Is the water within ~7.2 statute miles of the Omani coast deep enough for oil tankers for the entire transit?

Based on bathymetry:

👉 Very likely yes — depth-wise

Because:

Deepest channel hugs Oman
No evidence of shallow barriers along that southern edge
Known deep zones exist along that path
⚖️ But here’s the cautious (lawyerly) caveat

I cannot prove from open-source bathymetric charts that every single mile of that 7.2-mile strip is continuously deep enough without exception.

However:

All available bathymetric descriptions strongly support that:

The southern (Oman) side is the deepest and most navigable part of the Strait

🧾 Bottom line (clean and honest)

David:

From a bathymetric (depth) standpoint, there is no obvious barrier preventing large oil tankers from transiting the Strait while staying on the Oman side and outside Iranian territorial waters.

And more bluntly:

If routing rules were ignored in a wartime scenario, depth would not stop ships from doing exactly what you’re describing.

🧠 Plain-English version
The seabed actually helps your theory
The deepest water is exactly where you want ships to go
The problem is traffic control—not ocean depth

Here are links to relevant maps and depth charts:

https://www.researchgate.net/profile/Elmira-Mahin-Abdollahzadeh/publication/321002522/figure/fig3/AS:588411303919618@1517299595439/Bathymetry-of-the-region-Persian-Gulf-and-Oman-Sea.png

https://www.researchgate.net/publication/376388940/figure/fig1/AS:11431281212744988@1702802996285/Schematic-of-the-Persian-Gulf-and-Oman-Sea-overlaid-on-the-map-of-the-basin-bathymetry.png

https://www.researchgate.net/publication/235259014/figure/fig3/AS:667830563373064@1536234622473/a-Bathymetry-and-geography-of-the-region-of-the-Persian-Gulf-and-of-the-Gulf-of-Oman.png