VISIR is a numerical model for computing optimal maritime tracks. Its development started at CMCC from scratch in 2012. VISIR is based on a graph-search method and uses dynamic meteo-oceanographic fields for computing optimal maritime tracks. Furthermore, VISIR considers both static constraints, such as avoidance of shallow waters, as well as time-dependent constraints related to vessel intact stability. So far, ocean currents and surface gravity waves were considered in VISIR for motor vessels. In a latest development, VISIR optimal tracks are assessed for their capacity to reduce carbon intensity of the voyages. VISIR model powers an operational routing service for the Mediterranean Sea (www.visir-nav.com) and was used for mapping optimal tracks in the Atlantic Ocean (www.atlantos-visir.com). VISIR is validated versus both analytical solutions, another path planning model, and actually sailed tracks reported through AIS data.
The word “VISIR” is a trade mark of CMCC (https://www.euipo.europa.eu/)
VISIR is free and open software under the terms of the LGPL license, and is distributed from http://www.visir-model.net/ where also news, publications, and information on its funding projects can be retrieved.