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Maritime law: ship arrest, cargo disputes and the contracts behind global trade.

By Av. Serkan Kara, Istanbul Bar No. 53770. Last updated: 14 June 2026.

Ship arrest in Turkey is governed by the 1999 International Convention on Arrest of Ships (Geneva), applied through the maritime book of the Turkish Commercial Code No. 6102, and requires a recognised maritime claim plus a court order before a vessel can be detained. For cross-border owners, charterers, and cargo traders, the three legal forces reshaping shipping in 2026 are the same everywhere: sanctions compliance that controls payments and port access, decarbonization regulation (IMO Carbon Intensity Indicator, EU Emissions Trading System, FuelEU Maritime), and fast interim remedies such as vessel arrest. This guide answers the questions counsel actually face, naming the governing instruments rather than vague references to international rules.

What law governs ship arrest in Turkey?

Ship arrest in Turkey runs on the 1999 Geneva Arrest Convention, implemented through the maritime book of the Turkish Commercial Code No. 6102 and the interim-measure provisions of the Code of Civil Procedure No. 6100. A claimant must show a maritime claim recognised by the Convention, then obtain a court order; the court typically requires counter-security from the applicant. Outcomes in this civil-law, document-driven system are shaped as much by the timing and completeness of paperwork as by the merits of the underlying dispute.

Arrest is most often used where a claimant fears asset dissipation or needs immediate leverage. Typical grounds include:

How do you release an arrested vessel quickly?

The fastest release comes from offering acceptable security in a form the local court and the claimant will take, not from arguing the full merits at the arrest stage. Under the 1999 Geneva Convention framework, security is the mechanism for lifting an arrest, and Protection and Indemnity (P&I) clubs play an outsized role because they can issue a Letter of Undertaking (LOU) and coordinate claims handling. In many ports, release is a practical negotiation: the claimant wants reliable security and a defined forum, while the owner wants the ship moving with minimal disruption.

The owner-side first-hours playbook:

  1. Notify the P&I club and local counsel immediately.
  2. Preserve evidence: deck and engine logs, emails, AIS data, bunker delivery notes, and mate’s receipts.
  3. Map the arrest risk: where the ship calls next and where the claimant can realistically arrest.
  4. Decide the security posture: cash, bank guarantee, or P&I LOU, depending on what the local court accepts.

A claimant moving for arrest should pre-build an arrest pack: the contract chain (charterparty, sale, or supply contract), invoices and proof of the unpaid balance, default notices and correspondence, vessel identifiers (IMO number, flag, owner and manager), and a concise legal memo mapping the facts to the remedy requirements. Owners should keep a parallel defence pack covering proof of payment or set-off, jurisdiction and forum objections, documentary contradictions in the claimant’s file, and pre-approved security options. For award enforcement that often follows, see our international arbitration practice.

How do sanctions controls affect a single voyage?

In 2026, sanctions compliance is an operational gatekeeper rather than a back-office check, because the entities you cannot operate without, banks, P&I clubs, classification societies, bunker suppliers, and major ports, self-enforce by refusing to proceed when a file looks risky. The most common failure mode is not deliberate evasion but weak screening and documentation that causes a bank or insurer to decline payment, cover, or a port call. The practical defence is a clean, auditable paper trail that survives a compliance team’s risk score.

Compliance teams rarely argue the law with you; they run a score, and certain indicators trigger a stop even without a breach. Common red flags include:

Minimum controls for owners, charterers, and traders are counterparty screening (beneficial ownership, affiliates, agents, payment banks), vessel screening (flag and name or IMO history, management changes), cargo screening (origin documents, bill-of-lading chain, transshipment risk), voyage-risk review (ports, STS zones, high-risk waters, prior deviations), AIS-integrity review, and a document pack prepared in advance for banks and insurers. Because sanctions regimes change with each listing cycle, confirm the specific designations and licence positions in force at the time of the voyage rather than relying on a prior screening.

What contract clauses prevent operational collapse?

If a charterparty or supply contract does not allocate sanctions and emissions risk expressly, the parties end up litigating force majeure and frustration while the ship burns money at anchor. The governing standards are the Turkish Code of Obligations No. 6098 for contractual performance and the Turkish Commercial Code No. 6102 for the maritime overlay, but the protection comes from drafting, not from the default statutory position. Well-drafted clauses allow lawful refusal or termination where performance would expose a party to sanctions, define what counts as sanctions evidence (screening reports, ownership declarations, port clearance), allocate the costs of deviation and delay, and impose cooperation duties with hard deadlines.

A recurring trap is the opportunistic counterparty who uses a vague sanctions or war-risk concern as a pretext to renegotiate freight, demurrage, or cargo pricing. The clause must be strict enough to block manufactured non-performance while still permitting lawful refusal when the risk is real. Build in an explicit cooperation clause requiring the counterparty to supply the ownership, cargo-origin, and end-user information needed for screening within a defined window, with a cost-shifting or termination remedy if it fails. BIMCO model clauses are a sound starting point, but tribunals test them against the facts, so adapt the triggers, the decision authority, and the evidence standard to your trade lanes.

Who pays for decarbonization compliance under a charter?

There is no universal answer; liability for emissions-linked obligations follows the contract, and where the charterparty is silent, disputes arise because technical responsibility and commercial control are split. The regulatory layer in 2026 combines the IMO net-zero framework and MARPOL Annex VI standards, the IMO Carbon Intensity Indicator (CII), the EU Emissions Trading System extended to maritime transport, and FuelEU Maritime, which ties compliance to the greenhouse-gas intensity of energy used onboard. The legal question is not whether to support decarbonization but who buys allowances, who files reports, who bears price volatility, and who controls fuel, speed, and routing.

For time charters and contracts of affreightment, allocate at minimum:

Treat carbon compliance as a standing part of the vessel’s legal status, alongside class and statutory certificates. Emissions rules create a new evidentiary layer, and counterparties weaponize data gaps: inconsistent reported consumption, routing choices said to inflate emissions, or late data blamed for a penalty. Because allowance prices, penalty rates, and phase-in scopes are set by regulation and revised over time, confirm the figure and coverage in force at the time of performance rather than assuming a fixed current rate.

Litigation or arbitration for a charterparty dispute?

Most international charterparty disputes are resolved by arbitration rather than court litigation, with the London Maritime Arbitrators Association (LMAA) and the Society of Maritime Arbitrators (SMA) among the dominant forums, while vessel arrest and other interim measures remain the leverage tool that secures recovery. Arbitration decides the merits, but the commercial outcome is often fixed earlier, by securing the claim through arrest, forcing evidence preservation, and controlling the operational narrative. The two paths are complementary, not exclusive: an award is worth little against an unreachable counterparty, so interim security frequently decides who actually recovers.

Factor Maritime arbitration (e.g. LMAA, SMA) Court litigation
Typical use Charterparty, demurrage, and contract disputes by agreement In rem arrest, urgent interim relief, non-signatory claims
Forum control Chosen venue, rules, and arbitrators Court with jurisdiction over the vessel or party
Confidentiality Generally private Generally public record
Interim security Limited; often paired with court arrest Direct route to arrest and attachment
Cross-border enforcement Awards enforced under the New York Convention (Art. V grounds for refusal) Judgment recognition under the relevant treaty or PIL No. 5718

Foreign arbitral awards are enforced across borders under the 1958 New York Convention, whose Article V sets the limited grounds on which a court may refuse recognition, and which Turkey applies alongside the International Arbitration Law No. 4686 and the Private International Law and Procedure Act No. 5718. Your contract should specify governing law, the arbitration venue and rules, access to interim relief, and service-of-process mechanics, so that the dispute path preserves enforceability from the start.

The Turkish Straits and the first 24 hours

Operations in and around the Turkish Straits (the Bosphorus and the Dardanelles) add practical constraints: traffic control, safety rules, and rapid escalation when an incident occurs, often turning a casualty into a multi-agency event involving the harbour master, coast guard, customs, and, where there is an incident, the prosecutor. Counsel must be able to coordinate with maritime authorities while building the litigation record from the first hour.

The first 24 hours after a maritime incident frequently determine the legal outcome. Freeze and preserve evidence (ship logs, the voyage data recorder, emails, messaging records, and AIS data), appoint a single legal point of contact for external communications, notify the P&I and hull-and-machinery (H&M) insurers and request the claims-handling protocol, map the exposure across sanctions, environmental, cargo, crew, and criminal risk, and prepare a security plan if arrest risk is present. The recurring self-inflicted mistakes are inconsistent explanations to different stakeholders, late P&I engagement, lost witnesses and documents, and ignored bank or insurer documentation requests until funds are blocked.

Frequently asked questions

Can a vessel be arrested for a charterparty dispute?

Often yes, depending on the claim type, the documentation, and the procedural posture. Under the 1999 Geneva Arrest Convention applied through the Turkish Commercial Code No. 6102, the decisive issue is whether the claim qualifies as a recognised maritime claim and can be evidenced to meet the interim-remedy requirements. Hire and demurrage claims commonly qualify when the contract chain and default are properly documented.

Who pays EU ETS maritime costs under a time charter?

There is no universal answer; it depends on the contract. If the charterparty is silent, disputes arise because technical compliance responsibility and commercial control over fuel, speed, and routing are split between operator and charterer. Best practice is to allocate allowances, reporting duties, data-sharing, and price-volatility risk explicitly, and to confirm the EU ETS scope and allowance position in force at the time of performance.

Do sanctions clauses automatically excuse performance?

No. A sanctions clause reduces risk only when it is drafted precisely and aligned with the factual scenario, the counterparty status, the payment path, and the cargo and voyage facts. Vague clauses that turn on an undefined sanctions concern tend to produce litigation rather than protection, so define the evidence standard, the decision authority, and the refusal or termination mechanics.

Are foreign arbitration awards enforceable in Turkey?

Yes. Turkey is a party to the 1958 New York Convention, under which foreign arbitral awards are recognised and enforced, with refusal limited to the grounds in Article V, and applies the International Arbitration Law No. 4686 for arbitrations seated in Turkey. Many parties still pair an award with vessel arrest or interim measures, because winning on the merits does not help if the counterparty cannot pay or its assets are unreachable.

How do AIS gaps affect legal exposure?

AIS gaps are treated as a high-risk indicator, particularly in sanctions-sensitive trades, and can trigger enhanced scrutiny from banks, insurers, and counterparties even when innocent. The practical response is to document the operational reason at the time and preserve supporting evidence, so the gap can be explained from the record rather than reconstructed after a payment or cover is already blocked.

Speak to maritime counsel

Cross-border shipping disputes are won on preparation: clean contracts, an auditable compliance file, and a security strategy ready before the ship berths. For arrest and release strategy, charterparty drafting, sanctions and emissions risk allocation, or enforcement of an award, work with our maritime trade and transport law team. Related reading: maritime law and contracts, legal aspects of foreign investment in Turkey, and bankruptcy and insolvency for cross-border creditors.

General information, not legal advice. Turkish law; verify your specific situation with qualified counsel.