Every year, fires aboard roll-on roll-off (ro-ro) ships result in costly damage to ships and their cargo and, fortunately less frequently, in tragic loss of life. On the other hand, statistical studies have shown that a large proportion of major fire accidents originated in the vehicle decks. To improve the issue of vehicle-deck fires on board ro-ro ships, a performance-based simulation tool was developed to quantify the consequences of these fires on people, ship, and cargo. This tool combines a deterministic computational fluid dynamics model to assess the fire consequences in the vehicle decks and open areas of the ship; a stochastic network model in the accommodation spaces; and a deterministic evacuation model to evaluate the consequences of fire to people on board. This article briefly presents the numerical tools used and their extension to ro-ro ships, then the results obtained for selected fire scenarios on two generic ro-ro ships, varying the location of the fire source, wind conditions, and including one accidental situation due to a loss of integrity of the insulation at the ceiling of the deck from which the fire originated and one scenario where some openings of this deck were closed. People evacuation was simulated for the accidental scenario. Fire consequences are further evaluated in terms of human survivability, in compliance with the life safety performance criteria of the International Maritime Organization, damage to the ship and cargo. A qualitative comparison with reported accident data is presented to assess the consistency of model results.

每年，滚装船上的火灾都会对船舶及其货物造成高昂的损害，幸运的是，造成悲惨生命损失的频率较低。另一方面，统计研究表明，重大火灾事故很大一部分源于车辆甲板。为了改善滚装船上的车辆甲板火灾问题，开发了一种基于性能的模拟工具来量化这些火灾对人员、船舶和货物造成的后果。该工具结合了确定性计算流体动力学模型来评估车辆甲板和船舶开放区域的火灾后果；住宿空间中的随机网络模型；以及确定性疏散模型，用于评估火灾对船上人员的后果。本文简要介绍了所使用的数值工具及其对滚装船的扩展，然后是在两艘通用滚装船上选定的火灾场景中获得的结果，改变了火源的位置、风力条件，并包括一种由于意外情况而导致的情况。起火的甲板天花板绝缘完整性丧失，以及该甲板的一些开口被关闭的一种情况。针对意外场景模拟人员疏散。根据国际海事组织的生命安全性能标准，从人类生存能力、船舶和货物损坏等方面进一步评估火灾后果。与报告的事故数据进行定性比较，以评估模型结果的一致性。