抄録
After the tragedy of ro-ro passenger ferry “Estonia”, a requirement on evaluating effectiveness of escape routes in ro-ro passenger ferries in its early design stage was added to 74 SOLAS Convention on 1 July 1997. In future, this requirement will be added in regulations for high speed craft. In this regard, establishment of a technique for evaluation of escape routes using computer simulations is highly anticipated internationally.
Flow rate of persons (or walking speed) in escape passages as well as size and physical conditions of escape routes and doorways are important parameters for escape route analysis by computer simulations. It is also necessary to consider list and trim as well as roll and pitch of ships.
In this study, a series of experiments were carried out to measure walking speed and flow rate of persons in listed escape routes and at doorway openings with coaming. These are unique conditions of ships. The same measurements were also made in case of existence of oncoming persons in simulated escape routes. Parameters such as flow rate coefficient were derived from the results of these experiments and used for computer simulations on escape route analysis in listed conditions of ships.
The simulations were carried out for a ro-ro passenger ship accommodated with 777 passengers and 55 crew. As the results of the simulation, increase of escape time (from the order of evacuation until assembling) was 24.5 % for in 10 degrees of list and 26.3% in 20 degrees of list.
