The issue of collision between large ships and large cetaceans is global, complex, and many species are susceptible to it. Thus, a great variety of management measures and technological tools was developed around the world in order to limit that risk. This report intends to provide an overview of the different management measures implemented to reduce collisions between large cetaceans and commercial ships2 and an evaluation of these measures when possible. First, an inventory and evaluation of the technological tools are presented, followed by a presentation of the different management measures implemented around the world to reduce the risk of ship strikes. Future measures are presented at the end of this report. However, none is the ideal solution to reduce ship strikes. The different systems do not always meet the technical, economic (e.g. speed limitations, rerouting) and ergonomic (e.g. night vision systems) requirements of ships and are not always respectful from an ecological point of view (e.g. ADDs, sonar). Some are well-adapted to the area they were developed but can hardly be applied everywhere (e.g. WADBS, WACS, permit system). The only measure applicable everywhere in the world is the training and awareness raising efforts for concerned stakeholders. I would allow, among others, to reduce the lack of cooperation with, knowledge on or compliance with certain measures. Therefore, a combination of several measures (voluntary or mandatory, in the short term and the long term) must be adopted in collaboration with stakeholders and given the environmental (e.g. ecology, ethology and distribution of the targeted species) and economic (e.g. features and requirements of local shipping traffic) characteristics of the concerned region. Beforehand, some measures (e.g. speed limitations) would require a technical and socio-economic feasibility study.