Are Crews Trained to Fight an EV Fire?

Mostly not — and the gap is structural. A seafarer's mandatory firefighting training under STCW is generic shipboard firefighting; it teaches crews to fight fires they can extinguish. A lithium-ion battery in thermal runaway is not one of them. The IMO only began writing EV-specific training guidance in 2025, with the first interim text due at the HTW Sub-Committee's 12th session in February 2026. Until then, what the certificate covers and what the deck demands diverge.

What STCW actually certifies

Generic firefighting — not lithium-ion fires. Every seafarer holds basic firefighting (STCW A-VI/1) and many hold advanced firefighting (A-VI/3): hose handling, extinguisher selection, boundary cooling, breathing apparatus, fire-team command. None of it includes a module on lithium-ion thermal runaway, EV battery architecture, or the explosive vapour cloud a failing pack produces. The training assumes a fire you can put out. The certificate says nothing about one you can't.

Why an EV fire breaks the routine-firefighting model

Because you cannot extinguish a cell that makes its own heat — and, in nickel-rich chemistries, its own oxygen. An EV battery pack is encapsulated and sits low under the vehicle, hard to reach for the direct cooling that would actually stop thermal runaway. The industry's own framing is blunt: such fires cannot be put out by conventional shipboard sprinklers or by seafarers running a routine firefighting course. IUMI's 2025 best-practice update tells crews to apply fixed firefighting first, rather than mount a manual attack, and to use water for its cooling and boundary effect — not to imagine they are extinguishing the battery.

The doctrine crews actually need

Contain and cool, not enter and extinguish. The right response inverts a lot of routine firefighting instinct, which is exactly why training has to change.

• Trigger fixed firefighting (drencher / CO2) early — IUMI and the VCSF both put fixed systems ahead of manual crew attack.
• Boundary-cool to stop spread to adjacent vehicles; water is for cooling the space, not for 'putting the battery out'.
• Treat the vapour cloud as explosive and toxic — the VCSF notes it can be safer to vent than to seal, the opposite of conventional practice, and PPE must protect against the gas.
• Assume re-ignition: a pack that looks 'out' can reignite hours later, so monitoring continues long after visible flames stop.

Why the training gap is really a detection gap

Because every line of the right doctrine depends on time — and time depends on finding the fire early. Early fixed firefighting only helps if the fire is caught while the load is small; boundary cooling only holds if the space is identified before the fire is established. The VCSF puts the window in plain numbers: a vehicle fire reaches peak heat-release in 6–10 minutes, and it recommends switching to fixed firefighting if the fire is not under control within 10–15 minutes of the first alarm. A perfectly drilled crew can still lose a deck if that first alarm is smoke from an already-developed fire. The training catching up at HTW 12 closes one half of the problem; the other half is detection lead time — whether the trained response arrives early enough to matter.

When does EV-fire training become mandatory?

Not yet — it is mid-transition. The IMO's Human Element, Training and Watchkeeping (HTW) Sub-Committee has agreed the ongoing STCW review should cover EV-fire and battery emergencies, and a correspondence group is preparing interim guidance — covering battery-powered ships among other alternative-energy cases — for HTW 12 in February 2026. The Maritime Safety Committee agreed at its 109th session (December 2024) to advance short-term risk-control measures while longer-term, mandatory STCW amendments are developed toward a 2027 target. For now the strongest material is voluntary: IUMI's guidance, the VCSF response framework, EMSA's guidance and MCA MGN 653(M). An operator that drills its crews against those today is ahead of the certificate.

Sources

• 1. IMO — Sub-Committee on Human Element, Training and Watchkeeping (HTW): STCW review to address EV-fire and battery-emergency training; interim guidance covering battery-powered ships due at HTW 12 (February 2026). Maritime Safety Committee, 109th session (December 2024): short-term risk-control measures now, longer-term STCW amendments targeted toward 2027.
• 2. IUMI — "Risk mitigation for the safe ocean and short-sea carriage of electric vehicles" (September 2025): apply fixed firefighting first rather than manual crew firefighting; water for cooling and boundary cooling; battery encapsulation limits access for extinguishment.
• 3. Vehicle Carrier Safety Forum — "Fire Response: High Level Guidelines" (v1.1, January 2025): 6–10 minutes to peak heat-release; switch to fixed firefighting if not under control within 10–15 minutes; vapour-cloud handling; FFS familiarity and frequent drills.
• 4. Regulatory stack referenced by underwriters — IMO MSC.1/Circ.1615 Interim Guidelines (RoPax), EMSA Guidance, MCA MGN 653(M), ICS Common Guidance on the Presentation and Loading of Vehicles.
• [VERIFY: exact STCW table references A-VI/1 (basic firefighting) and A-VI/3 (advanced firefighting) — standard STCW structure; confirm the table numbers against the convention text before publication.]