Unsafe port claims in charterparty disputes are among the most important risk-allocation issues in shipping law because they sit at the point where navigation, commercial orders, and legal responsibility meet. When a charterer nominates a port or berth and the vessel is damaged, delayed, trapped, exposed to political violence, or forced to deviate, the central question is often whether the nomination breached a safe port or safe berth obligation. In practice, these disputes matter most under widely used charter forms such as NYPE 2015, which BIMCO describes as the most widely used standard time charter in the dry cargo sector, and GENCON 2022, which BIMCO describes as a standard general-purpose voyage charterparty.
The commercial significance of the topic is obvious. A port nomination can affect hull damage exposure, cargo delay, demurrage, deviation costs, war-risk routing, ice delay, pollution consequences, and even the total loss of the vessel. Yet the legal structure is more subtle than many parties expect. An unsafe port claim is not a guarantee that the charterer will answer for every casualty that happens after nomination. English-law authorities, especially The Ocean Victory, show that the promise is predictive and fact-sensitive: it is assessed by reference to the time of nomination, and the charterer is not in breach if the casualty was caused by an abnormal occurrence rather than by an unsafe characteristic of the port itself.
Why Unsafe Port Claims Matter in Charterparty Practice
Unsafe port disputes arise because charterparties divide operational control. In many time charter arrangements, the shipowner keeps navigational control while the charterer directs the vessel’s commercial employment and nominates the ports between which the ship will trade. BIMCO’s training materials describe the issue as the duty to order the ship to trade between safe ports, and they treat questions such as “What is a safe port?”, “When is a port to be safe?”, and “What is the charterer’s obligation if a safe port becomes unsafe?” as core topics in time-charter law. That is a good practical description of why these disputes recur so often.
The issue is not confined to time charters. Voyage charters can also generate unsafe port disputes, especially where the charterer nominates the loading or discharge place, where the contract requires a substitute safe port if the original destination becomes problematic, or where war-risk, strike, sanctions, force-majeure, or ice clauses allow the owners to refuse the nominated port and demand an alternative safe nomination. BIMCO’s standard voyage and risk-allocation clauses repeatedly use the language of a safe port or safe place in exactly these circumstances.
The Core Legal Test Under English Law
The modern starting point remains the UK Supreme Court’s decision in Gard Marine v China National Chartering (The Ocean Victory) [2017] UKSC 35. The Supreme Court’s official press summary states that it was common ground that the test for breach of the safe port undertaking was whether the vessel’s damage had been caused by an abnormal occurrence, that the date for judging breach was the date of nomination, and that the promise was a prediction about the safety of the port when the ship arrives in the future. The Court also said that an abnormal occurrence should be given its ordinary meaning: something rare and unexpected that the notional charterer would not have in mind.
That formulation carries several important legal consequences. First, a safe port warranty is not judged with hindsight. The issue is not whether the ship was later damaged at the nominated port, but whether, at the time of nomination, the port could properly be treated as safe for the ship’s contemplated arrival, stay, and departure. Second, the promise is not absolute in the sense of guaranteeing that no accident will ever happen. The Supreme Court stressed that the relevant question was whether the event causing the damage was a normal characteristic of the port or instead an abnormal occurrence. Third, theoretical foreseeability is not enough on its own. The Court said that the fact the events causing the loss were theoretically foreseeable did not itself make them a normal characteristic of the port.
The Ocean Victory and the Meaning of “Abnormal Occurrence”
The facts of The Ocean Victory explain the doctrine especially well. The vessel was ordered to discharge at Kashima in Japan. The quay was vulnerable to long waves, and the fairway was vulnerable to northerly gales. When the vessel attempted to leave because of long waves, it could not safely navigate the fairway because of a severe gale and grounded, becoming a total loss. The Supreme Court nevertheless held that there was no breach of the safe port undertaking because the simultaneous coincidence of those conditions was an abnormal occurrence. The Court emphasized that no vessel in the port’s history had previously risked damage in that combination of circumstances and that the storm’s rapid development, duration, and severity were exceptional.
This is why unsafe port litigation is so fact-specific. A port may have known vulnerabilities, but that does not automatically make it legally unsafe. The legal question is whether the danger that materialized was sufficiently likely to occur that it had become an attribute of the port rather than a rare event. In other words, a port may still be “safe” in law even though it later proves disastrous in fact, if the disaster was produced by a rare and unexpected combination of circumstances.
Unsafe Port Does Not Mean Every Difficult Port
A useful way to understand the law is to distinguish between a difficult port and an unsafe port. Shipping frequently involves weather exposure, tidal windows, congestion, pilotage limits, draft constraints, war-risk screening, ice risks, and berth restrictions. None of those factors automatically makes a port legally unsafe. Unsafe port liability generally arises where the danger is a feature of the port, berth, or access route that cannot be avoided by ordinary good navigation and seamanship when the ship uses the port in the ordinary course of the contracted service. The Supreme Court’s approach in The Ocean Victory makes clear that the law is looking for an attribute of the place, not merely an accident that happened there.
That is also why the case law and market drafting often distinguish between a port, a berth, and a place. In some disputes, the whole port may be alleged to be unsafe because the approach channel, anchorage, or exit route is dangerous. In others, the problem may lie only in a nominated berth or place of loading or discharge. BIMCO’s NAABSA wording illustrates this narrower focus by dealing with whether vessels can lie safely aground at a particular berth or place and requiring the charterers to confirm that vessels of similar type can do so without suffering damage.
Common Categories of Unsafe Port Allegations
In practice, unsafe port claims usually fall into a handful of recurring categories. One category involves physical and navigational conditions: narrow or obstructed access channels, long-wave effects, inadequate breakwater protection, unreliable mooring arrangements, insufficient tug support, berth design defects, or tidal and draft conditions that make ordinary port use unsafe. The facts of The Ocean Victory itself were centered on access-route and weather interaction of this kind.
A second category involves ice and seasonal access. BIMCO’s Ice Clause for Time Charter Parties 2005 provides that the vessel need not enter or remain in an icebound port or area, or a place where there is a risk that the ship will not be able safely to enter, remain, or depart, and it allows the master to proceed to the nearest safe place and await fresh orders. The fact that BIMCO’s standard clause addresses these risks in that way reflects the commercial reality that ice may turn an otherwise ordinary port nomination into a legal safety problem.
A third category involves war risks, piracy, sanctions, strikes, and other external dangers. BIMCO’s War Risks Clause for Voyage Charter Parties 2025 allows owners, in the reasonable judgment of the master or owners, to refuse to proceed where the vessel, cargo, or crew may be exposed to war risks and, if necessary, to require the charterers to nominate a safe port for discharge. Similar alternative-safe-port language appears in BIMCO’s sanctions, strike, and force-majeure clauses. These clauses do not define the entire common-law warranty, but they show how the market routinely treats security, political, and industrial disruption as risks that may make a port commercially unusable or unsafe in contractual terms.
Time of Assessment: When Must the Port Be Safe?
The timing point is one of the most important in the law. The Supreme Court in The Ocean Victory stated that the safe port promise is judged at the date of nomination and is a prediction about the safety of the port when the ship arrives in the future. This means the charterer is not normally judged by facts that emerge only later unless those facts show that the danger was already a characteristic of the port at the time of nomination.
At the same time, charterparty practice recognizes that conditions can change after nomination. BIMCO’s training materials specifically ask: What is the charterer’s obligation if a safe port becomes unsafe? Standard clauses then provide practical answers by allowing owners to refuse entry, leave the area, or call for a fresh nomination of an alternative safe port in contexts such as war risks, ice, strikes, sanctions, and force majeure. So while the common-law warranty is judged by nomination, the contract often includes operational mechanisms for dealing with a subsequent deterioration in safety.
Causation: The Claimant Must Link the Loss to the Port’s Unsafety
Unsafe port claims are not won merely by showing that the vessel suffered damage at or near the nominated port. The owner must, in substance, connect the casualty to the unsafety of the nominated port, berth, or access route and not merely to an abnormal event or some independent cause. That was the decisive issue in The Ocean Victory: the owners’ side could not succeed because the casualty was treated as resulting from an abnormal occurrence rather than from a normal unsafe attribute of Kashima.
This causation requirement is why evidence is so central. In an unsafe port case, the real battle is often fought through port history, meteorological data, pilotage records, berth drawings, tide tables, notices to mariners, local practice, VDR/AIS data, weather routing evidence, expert navigation evidence, and contemporaneous communications between owner, master, charterer, pilot, and port authority. The legal test may be stated in a few lines, but the factual proof is usually extensive and technical.
Unsafe Port Claims and Bills of Lading
Unsafe port problems often spill beyond the charterparty itself. GENCON 2022 is accompanied by CONGENBILL 2022, a charterparty bill of lading for shipments of general cargo under GENCON. That matters because an unsafe port dispute may begin as a claim between owner and charterer but later affect cargo claims, delivery decisions, substituted discharge, route changes, and general average or freight issues under bills of lading. In practice, the charterparty usually remains the main source of the safe port promise, but the commercial consequences often spread into the bill of lading chain.
That is particularly true where the vessel cannot proceed to the original destination and the owners discharge at an alternative safe port under a sanctions, war-risk, strike, or force-majeure clause. BIMCO’s clauses repeatedly provide that, if the charterers fail to nominate a replacement safe port within the contractual response window, the owners may discharge at a safe port of their choice, with the contract then continuing on adjusted freight or expense terms. In other words, unsafe port issues often become not only damages claims but also performance-management and cargo-delivery disputes.
What Damages and Remedies Are Usually in Play?
If an unsafe port claim succeeds, the primary remedy is ordinarily damages for breach of the charterparty. The Ocean Victory itself arose as a claim for damages for breach of the undertaking to trade only between safe ports after the vessel grounded and became a total loss. That illustrates the scale these claims can reach: they may involve hull damage, total loss, salvage, delay, extra bunkers, substituted discharge costs, cargo liabilities, or other losses flowing from the unsafe nomination, subject always to ordinary contract principles and the particular charterparty wording.
A further point of real significance is limitation. The UK Supreme Court’s press summary in The Ocean Victory said that, had there been a breach of the safe port warranty, the charterer would not have been entitled to limit liability under the 1976 Limitation Convention for the loss of the ship itself. In 2025, the UK Supreme Court’s press summary in MSC Mediterranean Shipping Company SA v Conti 11 Container Schiffahrts-GmbH & Co KG MS “MSC Flaminia” described The Ocean Victory as authority that there is no right to limit under article 2.1(a) of the 1976 Convention in respect of a claim for loss of or damage to the vessel or consequential loss resulting from that damage. For charterers, that is a major exposure point.
How the Parties Commonly Manage the Risk Contractually
Because unsafe port exposure can be severe, commercial contracts often try to manage it in advance. That is why BIMCO clauses dealing with war risks, ice, strikes, sanctions, and force majeure repeatedly build in a mechanism for refusing the risky port and demanding a fresh nomination of a safe port. These clauses do not abolish the general law, but they are a market-level recognition that some dangers should be handled through fast operational rights rather than through later damages litigation alone.
This drafting point is especially important where the relevant risk is known and allocable rather than rare and abnormal. The stronger the clause is on route refusal, alternative-port nomination, insurance costs, delay consequences, and freight adjustment, the less likely the parties are to be left arguing only from general warranty principles after the event. Unsafe port claims are therefore as much a drafting problem as a litigation problem.
Practical Guidance for Owners and Charterers
For shipowners, the main practical lesson is not to treat a nomination challenge as a purely commercial quarrel. If there is a serious concern that the nominated port, berth, or access route is unsafe, the owner should create a contemporaneous record: master’s reports, weather data, port information, pilot advice, charts, notices, photographs, and expert input if needed. If the charterparty contains an alternative-safe-port mechanism, it should be triggered promptly and exactly. Waiting too long can turn a preventable unsafe port dispute into a casualty case.
For charterers, the key lesson is that nomination is not just a logistical act. It is a legal responsibility. The charterer should examine not only whether the port is commercially available, but also whether it is safe for the particular vessel, cargo, season, route, political context, and access conditions in the ordinary course of the contractual service. The Supreme Court’s abnormal-occurrence doctrine gives charterers important protection, but it does not excuse nomination of a port whose danger is already one of its established attributes.
Conclusion
Unsafe port claims in charterparty disputes turn on a deceptively simple question: did the charterer order the vessel to a port or berth that was not safe for the contemplated voyage and service? English-law authority, especially The Ocean Victory, shows that the answer depends on a predictive assessment made at the time of nomination, on whether the danger was an attribute of the port rather than an abnormal occurrence, and on whether that unsafety caused the owner’s loss. The law therefore protects owners from genuinely unsafe nominations, but it does not make charterers guarantors against every rare maritime accident.
For the shipping market, the deeper lesson is that unsafe port disputes are best managed before they become casualty claims. Clear charterparty drafting, well-designed alternative safe port mechanisms, disciplined nomination review, and careful evidence preservation are usually more valuable than aggressive hindsight alone. In modern charterparty practice, an unsafe port claim is rarely just about one bad port call. It is about how the contract allocated navigational and commercial risk from the start.
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