Safety (QRA) Software
The North Sea is one of the busiest shipping waters in the world. During the past 20 years MARIN has developed the SAMSON model that can assess the different safety aspects of shipping at sea. Collisions of ships with offshore platforms, collisions between ships at sea and founderings are only some of the many safety aspects that can be computed. Also the effect of measures (e.g. influence of Vessel Traffic Services (VTS), pilotage or traffic separation schemes) on the shipping traffic can be determined. Economic and environmental consequences are quantified and can be compared with the measures taken. This process is also known as Quantative Risk Assessment.

SAMSON
Knowledge of maritime traffic and its behaviour is essential for a successful risk assessment study as a part of formal safety assessment study. For many years such knowledge has been built up and improved. Not only within Dutch national projects for the Matitime Safety Agency (DGG) and the North Sea Directorate, both part of the Ministry of Transport, Public Works and Water Management, but also within the European projects, COST 301 and EURET, for the European Commission. Based on this knowledge the MANS model (Management Analysis North Sea) was developed. In 2001 the MANS model was renamed to SAMSON (Safety Assessment Models for Shipping and Offshore in the North Sea). The kernel of this model is a very detailed statistical traffic image surrounded by a number of casualty models. The models predict the frequency of different casualty types e.g. collisions, contacts, founding, ramming and drifting against platforms. The models predict the frequency of occurrence combined with geographical position.
This is essential for answering questions dealing with contingency planning.

SAMSON is used as a decision support system for the assessment of the effect of policy measures.

SIMDAS
During the last decade, since the introduction of six-barge push tows on the river Rhine, AVV (the transportation and traffic research division of the ministry of transport and public works) has developed by way of MARIN's Naultican Department MSCN and others an advanced traffic simulation tool. This tool, called SIMDAS, evaluates the safety and capacity of waterways through the analysis of traffic
flows which are the result of simulations of individual ship-ship and ship-environment interaction. Both the analysis of the traffic flows are part of the SIMDAS program. The tool has been used intensively over the last years for the evaluation of a number of measures, concerning both intrastructure and regulations, on the river Rhine and other Dutch inland waterways.

SIMDAS can be used to determine the capacity ans safety of a waterway and changed in capacity and safety as a function of the behaviour of waterways users, rules and regulations, waterway layouts and composition of traffic.

Contacts
Fore more information regarding Safety (QRA) Software please contact the department MSCN.

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