Cargo fires and cargo loss remain major safety challenges for the maritime industry. Although vessel design, onboard safety systems and cargo-handling practices have improved, detecting a fire inside a container at an early stage remains difficult.
Fires can develop unnoticed within individual containers before conventional detection systems are able to identify them, potentially allowing an incident to escalate. The consequences can include loss of life, serious vessel damage, pollution, cargo losses and disruption to maritime trade.
s vessels continue to grow in size and cargoes become increasingly diverse, detecting problems early is becoming more important. Earlier warnings, reliable data and practical tools can give crews more time to assess a developing incident and take action before it escalates.
These challenges are being examined through the Cargo Fire & Loss Innovation Initiative (CFLII), a multi-year collaborative programme launched in 2023 and delivered by Safety tech Accelerator.
As explained, the initiative focuses on identifying and testing technologies that could improve the detection and prevention of cargo fires and reduce the risk of cargo loss. The technologies are assessed against real operational conditions, with the findings used to help develop practical guidance for the maritime industry.
The problem
Cargo fires and cargo loss are industry-wide problems that the industry has not yet solved. Every year, fires in cargo holds cause loss of life, vessel damage, and environmental harm at a scale the industry continues to underestimate.
Existing detection systems were not built for the conditions inside a container ship, and the gap between when a fire starts and when it is detected remains dangerously wide. Cargo loss from parametric roll and misdeclared weight compounds the risk. These are not fringe events. They represent material exposure for every shipping line and insurer operating today.
The challenge areas
#1 Early detection in the hold
The cargo hold presents a uniquely complex detection challenge. Cargo composition changes with every voyage, and fires can develop from a wide range of sources. We test solutions holistically across commodities and fire types, looking at gas, particulate, and heat signals together, to understand how accurately and how early technology can identify a developing fire.
#2 Early detection on deck
Fires on the upper deck present a different set of challenges around deployment, line of sight, and environmental exposure. We have assessed technologies adapted from adjacent industries to understand what genuinely performs in a maritime context.
#3 Container Loss
Parametric roll and misdeclared cargo weight represent significant and underaddressed financial and safety risk. We are testing wave radar analytics and exploring screening solutions to give operators better data and better decision making at sea.
What three years of testing has shown
Novel sensors from adjacent industries consistently outperform the smoke detectors currently used onboard. These technologies were not designed for the marine environment, so a core part of the programme’s work is understanding what it takes to marinise them and adapt existing onboard systems alongside industry stakeholders including smoke sampling system manufacturers.
Wireless connectivity is a foundational requirement. Without certified onboard networks, the most capable sensors cannot be deployed safely or at scale. The programme is working with Lloyd’s Register to certify LoRaWAN connectivity for safety-critical applications onboard vessels.
Year 3 update
Testing has moved from feasibility to validation. Large-scale comparative fire trials are underway at the Danish Fire Institute, benchmarking sensor performance across commodities including battery fires and thermal runaway scenarios. Two technologies are progressing through Lloyd’s Register certification, one for wireless connectivity in safety-critical applications and one for an in-container sensor. These are important steps that lead to industry-wide deployment.
Key implications
- No single technology is the answer. The evidence points towards a layered approach combining different sensing methods as the most effective path to earlier detection.
- Technologies from adjacent industries outperform existing onboard systems, but marinisation is a core part of the path to deployment, not a minor consideration.
- The most capable sensors cannot be deployed at scale without certified onboard wireless networks. This is an infrastructure challenge as much as a technology one.
- The existing system can be augmented. Placing capable sensors on existing extraction pipes is the most immediately deployable path to meaningful improvement.
The initiative brings together shipping companies, insurers, classification societies and technical specialists to examine emerging approaches to fire detection, fire prevention and the prevention of cargo loss.
Technologies are being tested against operational conditions to assess whether they can detect fires earlier and provide more reliable information to crews.
The work also highlights the importance of looking beyond individual technologies. Improving cargo-fire safety may require a combination of different detection methods, better onboard connectivity and changes to existing systems, alongside a clearer understanding of how new technologies perform in the challenging environment of a container ship.