Ro-Ro Shipping
Ro-Ro EV Fire Risk: The Contract Clauses OEMs Are Missing
IMO guidelines, carrier SoC restrictions, and port protocols for EV fire risk on ro-ro ships are now contract obligations. Here's what OEM planners must build in now.
Shipping electric vehicles by ro-ro is measurably riskier than shipping ICE cars — and the regulatory framework designed to manage that risk is a patchwork of interim guidance, carrier-imposed restrictions, and pending SOLAS amendments that won't fully land until 2028. In the meantime, OEM logistics planners are operating against a moving target. The fire risk is real and documented. The rules are real but incomplete. And the gap between them is sitting, unmanaged, in your ocean transport contracts.
That needs to change now, not when the next vessel incident makes the headlines.
The Regulatory Stack Is Layered — and Full of Holes
The framework governing fire risk when shipping electric cars on ro-ro vessels runs across three levels. First, SOLAS — the foundational international convention. Second, the SOLAS II-2/20 amendments introduced via Resolutions MSC.550(108) and MSC.555(108), now in force for newbuilds, covering stronger fire detection, monitoring, and suppression systems in vehicle and ro-ro spaces. Third, a body of interim guidance — IMO MSC.1/Circ.1615, EMSA guidance, UK MCA MGN 653(M), ClassNK EV Guidelines, and the Vehicle Carrier Safety Forum fire response guidelines published in early 2026.
The problem: comprehensive new-energy-vehicle SOLAS amendments won't enter into force until 1 January 2028. MSC 109 set that timeline. Everything before it is guidance, not mandate — which means enforcement varies by flag state, carrier, and port.
Existing vessels must submit modification plans well before their first survey on or after 1 January 2028 to demonstrate compliance trajectory. OEMs contracting with carriers today should be asking a simple question: is this vessel on that retrofit schedule? If your carrier can't answer that, you don't have enough information to sign.
The IMDG Tightening Nobody Actioned in Their Handover Docs
The 2025 Edition of the IMDG Code became mandatory on 1 January 2026. It materially tightens the rules on EV carriage and lithium-ion battery scope. Carriers are now required to demand full shipper information — battery type, condition, state of charge, and provenance — before accepting a vehicle.
That means battery health data is no longer a nice-to-have. It is a compliance artefact that must accompany every vehicle at handover. If your current PDI-to-port documentation workflow doesn't routinely capture and transmit battery provenance and state-of-charge data as a formal record, you are already behind the mandatory standard — not just best practice.
This connects directly to a broader documentation problem we've written about before. The paperwork tax quietly killing your delivery timelines is now compounded by a compliance layer that has genuine legal weight behind it.
State of Charge: The Carrier-by-Carrier Lottery You Can't Leave to the Gate
Here's the one that will cost you real money if you ignore it. There is currently no internationally agreed floor for battery state of charge in maritime EV transport. EMSA guidance recommends managing SoC at loading to generally 20–50% displayed charge, noting that higher SoC correlates with faster heat release and higher peak temperatures during a fire event. Most ro-ro operators require 30% or below before accepting a vehicle. Some are stricter.
The result: vehicles are being rejected at terminal check-in because SoC is too high. That is a dwell-time and scheduling problem on top of a safety problem. Operators will tell you it's happening regularly, and it will get worse as EV volumes grow. Compound dwell costs pile up fast — something we've mapped in detail in Port Compound Dwell Time: What "Normal" Is Costing OEMs.
The fix is mechanical but requires coordination: SoC management must be built into factory release protocols and confirmed at each handover point in the chain. More immediately, OEM ocean transport agreements must contain carrier-specific SoC clauses — not generic references to "applicable regulations" that leave interpretation to the terminal gate operative.
And the additional cost of EV compliance isn't abstract. EV shipping surcharges are rising in 2026 precisely because carriers are pricing the risk and the operational overhead of EV-specific handling. If you haven't modelled that into your per-unit logistics cost, the number you're working with is wrong.
What Port Reception Protocols Actually Require of You
The January 2026 fire aboard a car carrier in Zeebrugge's outer harbour — reportedly carrying 110 electric vehicles — is the latest data point in a trend that includes the Morning Midas sinking off Alaska in 2025 while carrying over 3,000 vehicles. Incidents of this scale concentrate port authority attention fast. Ro-ro inspection standards in 2026 now include enhanced scrutiny of ventilation, detection systems, and EV segregation practices on vehicle decks.
For OEMs, the port reception side of this equation means understanding what your nominated discharge ports require — and whether your carriers' port reception plans have been updated to match post-2026 expectations. A vessel that meets flag-state minimums may still face delays or additional inspections at ports with stricter local protocols. That's a transit-time risk, not just a safety one.
The full picture of how EV transport rules interact with your logistics chain is covered in our guide to How Electric Vehicles Are Transported Safely: The 2026 Rules. But if you're specifically negotiating ocean contracts, the action items are narrower and more urgent.
What Happens Next — and What You Should Already Be Doing
The 2028 SOLAS entry-into-force date sounds like runway. It isn't. Carrier retrofit schedules, vessel survey cycles, and flag-state approval timelines mean the decisions that determine 2028 compliance are being made now. OEMs that wait for a tidy rulebook will find themselves locked into contracts with underspec'd vessels.
The minimum standard for any ocean transport agreement covering EVs in 2026: carrier retrofit status against MSC.550(108), carrier-specific SoC thresholds written as acceptance criteria, battery data requirements aligned to the 2025 IMDG Edition, and port reception protocol confirmation for every named discharge port. Not in the appendix. In the operative clauses.
The fire risk when shipping electric cars by ro-ro is no longer a headline you monitor. It is a contracting risk you manage — or absorb.
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