Oman’s proposal for voluntary shipping contributions at the Strait of Hormuz was intended to fund navigation and safety services without creating a formal toll. Iran’s rejection of the joint-management framework, however, shows that the real dispute is not about the fee—it is about who controls one of the world’s most important maritime chokepoints.
The most important word in Oman’s proposal is not “fee.” It is “voluntary.”
For a shipowner, charterer, insurer or master, however, a payment is only voluntary if refusing it has no effect on clearance, routing, priority, security assistance or the vessel’s ability to complete its voyage.
That is why this proposal matters far beyond the amount that might eventually appear on an invoice.
Oman presented Iran with a Gulf-backed framework for the joint regional management of the Strait of Hormuz. The proposal envisaged voluntary contributions from shipping towards navigational services, environmental protection, search and rescue, and other safety-related functions. It was modelled partly on the cooperative arrangement used in the Straits of Malacca and Singapore.
The political opening has already narrowed. On 29 July, a senior Iranian official said Tehran had ruled out the Omani joint-management proposal. Iran has instead proposed a temporary routing arrangement giving it greater control over both directions of traffic and rejected an equal division of the transit routes.
Why Oman Is Proposing a Cooperative Model
The Strait of Hormuz is not an ordinary coastal passage.
It is the principal maritime outlet for the Gulf and the main route for approximately one-fifth of global oil supplies, alongside major LNG, petrochemical and dry-bulk movements.
Commercial traffic also remains severely suppressed. Reuters reported that only six commodity-carrying vessels passed through the strait on Monday, illustrating how far activity remains below normal shipping patterns.
Oman’s approach attempts to separate two issues that are increasingly being treated as one:
- The right of ships to transit an international strait.
- The cost of providing navigation, environmental and emergency services within that strait.
Under the Omani proposal, passage would theoretically remain available while participating shipowners, user states or other stakeholders could contribute towards defined services.
In principle, that is different from charging a vessel merely for permission to pass.
Why the Malacca Comparison Matters
The Straits of Malacca and Singapore already operate a cooperative mechanism involving littoral states, user states and the shipping industry.
The arrangement includes a forum for dialogue, coordinated safety projects and an Aids to Navigation Fund that receives financial contributions for maintaining critical navigational infrastructure.
The model works because contributions support identifiable public-interest services. They do not give one coastal state the commercial power to approve or refuse an individual ship’s transit according to whether it has paid.
That distinction would have to be explicit at Hormuz.
A payment described as voluntary could become commercially compulsory if a non-paying ship faced:
- A less favourable route.
- Additional clearance requirements.
- Longer waiting times.
- Reduced access to navigational assistance.
- Greater security exposure.
The word used on the invoice would matter less than the operational consequences of refusing to pay.
Can Ships Legally Be Charged to Transit Hormuz?
The established international position is that transit passage through a strait used for international navigation cannot be suspended or made conditional on the payment of a toll.
In July, the IMO Council said any regional arrangement for Hormuz must guarantee non-discriminatory and unimpeded transit through the internationally recognised Traffic Separation Scheme adopted in 1968. It also reaffirmed that passage should remain free from tolls and charges.
The IMO Secretary-General has separately stated that there is no legal basis for a country to impose payments or discriminatory conditions merely for passage through an international strait.
Payment for a specific service is a different question.
Pilotage, towage, port services or another clearly requested service may create a legitimate charge. But a general “safety fee” becomes legally and commercially difficult when the service is undefined—or when payment is linked, directly or indirectly, to permission to transit.
What Iran’s Rejection Tells the Market
Iran’s response shows that the disagreement is not principally about financing navigational aids.
It is about authority.
Tehran has sought greater control over the routing and administration of vessels using the strait. Oman’s proposal would place that authority within a broader regional mechanism and prevent any single state from turning the waterway into a unilateral charging system.
For shipping, this distinction is fundamental.
A transparent, IMO-aligned safety mechanism can be incorporated into passage planning, charterparty wording and insurance arrangements.
A system based on political approval, changing transit routes or uncertain payment expectations cannot be managed with the same confidence.
What It Could Mean for Owners and Charterers
Charterparty allocation
Any new payment would immediately raise one commercial question:
Who pays?
The answer would depend on the charterparty wording and on how the charge is classified.
A navigational service, transit due, security expense and additional war-risk cost may each be allocated differently. Owners and charterers should not assume that a general clause covering port or voyage expenses would automatically resolve a new Hormuz payment.
Fixtures involving Gulf ports would require clear wording covering:
- Voluntary contributions and compulsory charges.
- Additional War Risk Premiums.
- Delays while awaiting transit approval.
- Deviation or alternative routing.
- Instructions issued by any new regional authority.
Gard has noted that the financial consequences of Gulf transit decisions depend heavily on the applicable war-risk clauses, safe-port obligations, off-hire provisions and the precise wording of the charterparty.
The master’s safety decision
Paying a fee would not make an unsafe passage safe.
Under SOLAS principles, the master retains overriding authority to take decisions considered necessary for the safety of the ship, crew and marine environment.
The commercial consequences of refusing or delaying a transit would still depend on the contractual position between owners, charterers and cargo interests.
Insurance and voyage economics
In practice, underwriters are likely to be more concerned with credible security guarantees, mine clearance, attacks, electronic interference and predictable routing than with the existence of a payment mechanism.
Even a modest contribution could produce disproportionate costs if it resulted in:
- Approval delays.
- Disputes over reimbursement.
- Different treatment for non-paying vessels.
- Additional waiting time.
- Uncertainty over safe-passage guarantees.
In tanker and LNG trades, several days of delay could be commercially more important than the fee itself.
Five Questions Shipping Needs Answered
Before Oman’s proposal—or any replacement arrangement—could gain commercial confidence, the industry would need clear answers:
- Is payment genuinely optional, with identical treatment for paying and non-paying vessels?
- Which body would collect, control and audit the money?
- What specific services would be provided?
- Would vessels continue using the IMO-recognised Traffic Separation Scheme?
- Would the system be accepted by IMO, flag states, insurers and major charterers?
Without those answers, the payment cannot be treated as an ordinary navigational expense.
The Real Issue Is Control, Not Cost
Iran’s rejection does not make Oman’s proposal irrelevant. It makes the underlying dispute clearer.
A cooperative fund for navigation, environmental protection and emergency services could be workable if it were transparent, non-discriminatory and completely separate from the right of transit.
What shipping cannot comfortably absorb is a system in which a supposedly voluntary payment gradually becomes the price of predictable treatment.
Until the parties agree who administers the routes, what happens to non-paying vessels and how freedom of navigation will be protected, Hormuz will remain a security and contractual risk—not merely another voyage expense.