Dark activity identification

A computer program product comprising a non-transitory computer readable storage medium retaining program instructions, which program instructions when read by a processor, cause the processor to:

• obtain location-reporting signals of a vessel, wherein the location-reporting signals comprise a first signal and a second signal, wherein the first signal indicates that the vessel was located at a first geographical position prior to a shutdown event, wherein the second signal indicates that the vessel was located at a second geographical position after the shutdown event;
• identify the shutdown event, wherein the shutdown event indicates that the vessel ceased to provide the location-reporting signals for a duration of the shutdown event;
• determine a distance between the first geographical position and the second geographical position;
• determine an estimated time to travel the distance based on the location-reporting signals of the vessel;
• determine a geographical zone of the shutdown event based on the location-reporting signals of the vessel, the geographical zone defining a maximal distance to which the vessel can travel in any direction during the shutdown event;
• compare the estimated time to the duration of the shutdown event, to determine whether the vessel had sufficient time to perform a dark activity that is associated with a maritime event, wherein the maritime event comprises a port event or a Ship-To-Ship (STS) event;
• in response to determining that the vessel had sufficient time to perform the dark activity, generate a potential travel path from the first geographical position to the second geographical position within the determined geographical zone, wherein the potential travel path comprises the maritime event;
• obtain images that correspond to the duration of the shutdown event and to the potential travel path;
• and
• verify that the maritime event occurred based on an analysis of the images, wherein said analysis identifies the maritime event by identifying an object potentially representing the vessel in the images.

A system comprising a processor and coupled memory, the processor being adapted to:

• obtain location-reporting signals of a vessel, wherein the location-reporting signals comprise a first signal and a second signal, wherein the first signal indicates that the vessel was located at a first geographical position prior to a shutdown event, wherein the second signal indicates that the vessel was located at a second geographical position after the shutdown event;
• identify the shutdown event, wherein the shutdown event indicates that the vessel ceased to provide the location-reporting signals for a duration of the shutdown event;
• determine a distance between the first geographical position and the second geographical position;
• determine an estimated time to travel the distance based on the location-reporting signals of the vessel;
• determining a geographical zone of the shutdown event based on the location-reporting signals of the vessel, the geographical zone defining a maximal distance to which the vessel can travel in any direction during the shutdown event;
• compare the estimated time to the duration of the shutdown event, to determine whether the vessel had sufficient time to perform a dark activity that is associated with a maritime event, wherein the maritime event comprises a port event or a Ship-To-Ship (STS) event;
• in response to determining that the vessel had sufficient time to perform the dark activity, generate a potential travel path from the first geographical position to the second geographical position within the determined geographical zone, wherein the potential travel path comprises the maritime event;
• obtain images that correspond to the duration of the shutdown event and to the potential travel path;
• and
• verify that the maritime event occurred based on an analysis of the images, wherein said analysis identifies the maritime event by identifying an object potentially representing the vessel in the images.