Accident susceptibility index for a passenger ship-a framework and case study

A framework for onboard assessment and monitoring of flooding risk due to open watertight doors for passenger ships

“…A more comprehensive assessment should also account for the actual operational environment, such as nearby maritime traffic and bathymetry in the vicinity. Such a method may lead to a more holistic approach that allows for active risk mitigation measures [61][62][63][64]. To this end, development of the new approach can begin by using the commonly applied framework for the risk-based design of naval ships [65,66].…”

“…The indices used to describe AS and VL are expressed on a linear scale as depicted in Table 1. The non-uniform distances between the consecutive indices are assumed to account for the anticipated nonlinearities in the governing mechanism behind the AS and VL, as elaborated upon in [62]. Ultimately, the risk indices (RI) are assigned to one of the following classes: Negligible, Low, Moderate, High, Very high, as shown in Table 2.…”

“…In the above expression the mapping functions may vary depending on the hydro-meteorological conditions and visibility, as demonstrated in [62]. The form of the mapping function can be specified by the ship operator; it can even vary from ship to ship, or from area to area.…”

“…The color code used here to distinguish among the risk levels is adopted from the earlier works on the accident susceptibility framework described in [62], as well as the framework for the assessment of severity of an accident, called Vessel TRIAGE, elaborated in [74]. The color code aims at clear communication between all involved stakeholders in an emergency situation.…”

“…Visibility data are used to assess the complexity of the environment. Finally, these three complexity types are combined using heuristics, in the form of an accident susceptibility framework as introduced and described in detail in [62].…”