One of the main issues with regard to fire safety of open ro-ro spaces and weather decks is that detection systems may not be as efficient as in closed ro-ro spaces. Several recent total losses of ro-ro ships have stressed the need for investigating more efficient fire detection solutions.

This study evaluated available and emerging fire detection technologies for use in open ro-ro spaces and on weather decks. A review of relevant regulations was performed as well as an evaluation of the expected efficiency of the identified alternative detection technologies, considering detection time and sensitivity to weather conditions, loading conditions and deck configuration, as well as cost.

Fibre optic linear heat detection and thermal imaging camera detection were selected for fire tests in open ro-ro space and on weather deck, respectively, onboard a commercial RoPax vessel. Both systems were found functional and suitable for the relevant ro-ro space environments. The risk reduction potentials of the systems were quantified and a cost-effectiveness assessment was performed. Thermal imaging camera detection was found cost-effective for all types of RoPax (Existing ships and Newbuildings), and fibre optic linear heat detection system was found cost-effective for Standard and Ferry RoPax (Existing ships and Newbuildings).