In mimicking authentic navigation behaviours, DYMITRI accurately simulates each vessel as an autonomous ‘agent’ that responds to the vessels around it. This ensures that all the vessels in the simulation manoeuvre in a realistic manner to provide a robust analysis of any scenario. The model has some unique features to address dense traffic streams. Foremost amongst these is the intelligence provided to each vessel during the simulation, where they seek to avoid collisions in accordance with the Collision Regulations. The vessel’s manoeuvre path is guided by its vessel type, size and speed, allowing realistic bunching and knock-on activity to be represented which is particularly important where small craft may impact the safety of larger ships.

Keeping it real DYMITRI allows vessel encounters and conflicts to be calculated for a variety of traffic situations and mixtures of vessel speed and density. As such, it can be used for comparing a range of different traffic situations, and risk control proposals.

Baseline and future cases are typically modelled and alternative traffic control arrangements tested to examine which options most effectively limit marine risk, and provide the most attractive cost-benefit to the key stakeholders. This thorough evaluation of traffic conflicts is then available to form the foundation for the assessment of risk within a Formal Safety Assessment framework, allowing port authorities and developers to identify and mitigate as many current and future risks as practicable.

Dr. Richard Colwill, Managing Director of BMT Asia Pacific
Richard Colwill

Dr Richard D Colwill (Managing Director of BMT Asia Pacific in Hong Kong) is a specialist marine engineer and scientist with particular expertise in the management and conduct of marine planning and risk studies associated with port, reclamation and infrastructure development. He has conducted a wide variety of marine risk assessments associated with port developments and coastal infrastructure and has been instrumental in developing new techniques for the simulation of marine risk activity.