ISESO Project

ISESO stands for Information Technology for Increased Safety and Efficiency in Ship Design and Operation (in Danish):

Informationsteknologi i forøget Sikkerhed og Effektivitet i Skibsdesign og –Operation) [1]

The ISESO project was conceived by the Danish Maritime Authority (Søfartsstyrelsen) in co-operation with Danish Maritime Industries and Trades.

The purpose of ISESO was to develop front-end technological maritime simulation tools for the benefit of Danish shipping, and the aim has been to contribute to maintaining and extending the Danish position within this area of commercial activity.

One of the primary objectives of the ISESO project was to develop a software package of rational tools for streamlining and assisting in applying FSA methods.

The developed computer program, GRACAT (Grounding and Collision analysis Toolbox) facilitates these types of analyses and further provides rational tools for evaluating and comparing the grounding and collision risk for the analysed alternatives.

The software calculates the probability of collision or grounding for a vessel operating on a specified route.

Given that a collision or grounding event has taken place the spatial distribution of the damages to the hull may further be calculated.

GRACAT results are presented in terms of probability distributions for indentation depth, length and height of the damage and for their location. A special case of a probabilistic analysis is a purely deterministic analysis, which also may be performed within GRACAT.

The theoretical foundation given on this site, is to a large extent based on the foundation established during the ISESO-project. 
Results for accident frequency and damage have been compared to registered data and good agreement was found in all cases.

The procedures developed during the development of GRACAT constitutes an essential part of the BaSSy Project and thus also the "IWRAP MK II".

Under the ISESO project, the derived procedure was applied to different Ro-Ro passenger vessel routes (Great Belt, Dover-Calais, Turku-Stockholm).

The results of the analyses were compared to registered data and good agreement was found in all cases.

This constituted the validation of the software for frequency and damage distribution estimation by the GRACAT program.